* To obtain a hardcopy of this question pool, either print the downloadable PDF file on this web page or print this page, or send a business sized SASE to the ARRL/VEC, 225 Main St, Newington CT 06111. Request the "2004 General Class Question Pool". For $1.50 the ARRL VEC will supply a hardcopy of this pool without receiving an SASE. この問題集のハードコピーを入手するのには、本ウェブページ上のダウンロード用ＰＤＦファイルを印刷するか、このページを印刷する。若しくは、ビジネスサイズのＳＡＳＥをＡＲＲＬ／ＶＥＣに送り、「２００４　ゼネラル級問題集」を依頼する。１．５＄で、ＡＲＲＬ　ＶＥＣはＳＡＳＥを受け取らなくてもこの問題集のハードコピーを送る。 * The questions contained within this pool must be used in all General class examinations beginning July 1, 2004, and is intended to be used up through June 30, 2008. この問題集に含まれる問題は２００４年７月１日から２００８年６月３０日までに 行われるジェネラル級試験に出題される。 * The correct answer position A,B,C,D appears in parenthesis following each question number [e.g., in G1A01 (C), position C contains the correct answer text]. 正解は、問題の最後に付いている括弧の中に表示されている［例えば、Ｇ１Ａ０１（Ｃ）では、Ｃが正解である］。 Question Pool ELEMENT 3 - GENERAL CLASS as released by the Question Pool Committee of the National Conference of Volunteer Examiner Coordinators December 1, 2003 SUBELEMENT G1 -- COMMISSION'S RULES [6 Exam Questions -- 6 Groups] G1A General control operator frequency privileges G1A01 (C) [97.301d] What are the frequency privileges for a General Class control operator in the 160-meter band (ITU Region 2)? ジェネラル級免許で運用できる１６０ｍ帯の周波数範囲は次の内どれか？ A. 1800 - 1900-kHz B. 1900 - 2000-kHz C. 1800 - 2000-kHz D. 1825 - 2000-kHz G1A02 (A) [97.301d] What are the frequency privileges for a General Class control operator in the 75/80-meter band (ITU Region 2)? ジェネラル級免許で運用できる７５／８０ｍ帯の周波数範囲は次の内どれか？ A. 3525 - 3750-kHz and 3850 - 4000-kHz B. 3525 - 3775-kHz and 3875 - 4000-kHz C. 3525 - 3750-kHz and 3875 - 4000-kHz D. 3525 - 3775-kHz and 3850 - 4000-kHz G1A03 (D) [97.301d] What are the frequency privileges for a General Class control operator in the 40-meter band (ITU Region 2)? ジェネラル級免許で運用できる４０ｍ帯の周波数範囲は次の内どれか？ A. 7025 - 7175-kHz and 7200 - 7300-kHz B. 7025 - 7175-kHz and 7225 - 7300-kHz C. 7025 - 7150-kHz and 7200 - 7300-kHz D. 7025 - 7150-kHz and 7225 - 7300-kHz G1A04 (A) [97.301d] What are the frequency privileges for a General Class control operator in the 30-meter band? ジェネラル級免許で運用できる３０ｍ帯の周波数範囲は次の内どれか？ A. 10100 - 10150-kHz B. 10100 - 10175-kHz C. 10125 - 10150-kHz D. 10125 - 10175-kHz G1A05 (B) [97.301d] What are the frequency privileges for a General Class control operator in the 20-meter band? ジェネラル級免許で運用できる２０ｍ帯の周波数範囲は次の内どれか？ A. 14025 - 14100-kHz and 14175 - 14350-kHz B. 14025 - 14150-kHz and 14225 - 14350-kHz C. 14025 - 14125-kHz and 14200 - 14350-kHz D. 14025 - 14175-kHz and 14250 - 14350-kHz G1A06 (D) [97.301d] What are the frequency privileges for a General Class control operator in the 15-meter band? ジェネラル級免許で運用できる１５ｍ帯の周波数範囲は次の内どれか？ A. 21025 - 21200-kHz and 21275 - 21450-kHz B. 21025 - 21150-kHz and 21300 - 21450-kHz C. 21025 - 21150-kHz and 21275 - 21450-kHz D. 21025 - 21200-kHz and 21300 - 21450-kHz G1A07 (B) [97.301d] What are the frequency privileges for a General Class control operator in the 12-meter band? ジェネラル級免許で運用できる１２ｍ帯の周波数範囲は次の内どれか？ A. 24890 - 24975-kHz B. 24890 - 24990-kHz C. 24900 - 24990-kHz D. 24900 - 24975-kHz G1A08 (A) [97.301d] What are the frequency privileges for a General Class control operator in the 10-meter band? ジェネラル級免許で運用できる１０ｍ帯の周波数範囲は次の内どれか？ A. 28000 - 29700-kHz B. 28025 - 29700-kHz C. 28100 - 29600-kHz D. 28125 - 29600-kHz G1A09 (D) [97.301d] What are the frequency privileges for a General Class control operator in the 17-meter band? ジェネラル級免許で運用できる１７ｍ帯の周波数範囲は次の内どれか？ A. 18068 - 18300-kHz B. 18025 - 18200-kHz C. 18100 - 18200-kHz D. 18068 - 18168-kHz G1A10 (C) [97.305a] What are the frequency segments for General class licensees within the 75/80-meter band in ITU Region 2 for CW emissions? ７５／８０ｍ帯で、ジェネラル級免許人がＣＷ送信を出来る周波数領域は？ A. 3500 - 3750 kHz and 3800 - 4000 kHz B. 3700 - 3750 kHz and 3850 - 4000 kHz C. 3525 - 3750 kHz and 3850 - 4000 kHz D. 3525 - 4000 kHz G1A11 (C) [97.305c] What are the frequency segments within the 10-meter band for phone emissions? １０ｍ帯で、音声送信が出来る周波数領域は？ A. 28000 - 28300 kHz B. 29000 - 29700 kHz C. 28300 - 29700 kHz D. 28000 - 29000 kHz G1B Antenna structure limitations; good engineering and good amateur practice; beacon operation; restricted operation; retransmitting radio signals G1B01 (C) [97.15a] Provided it is not at or near a public-use airport, what is the maximum height above ground an antenna structure may rise without requiring its owner to notify the FAA and register with the FCC? 無線局が民間空港の近隣でない場合に、ＦＡＡに通知してＦＣＣに登録する事無しに立てる事の出来るアンテナの最大地上高は？ A. 50 feet B. 100 feet C. 200 feet D. 300 feet G1B02 (B) [97.101a] If the FCC Rules DO NOT specifically cover a situation, how must you operate your amateur station? 無線局に関してＦＣＣに特別な規定がない場合、どのように無線局を運用するか？ A. In accordance with standard licensee operator principles B. In accordance with good engineering and good amateur practice 　　　正しい技術と正当なアマチュア運用に従う。 C. In accordance with station operating practices adopted by the VECs D. In accordance with procedures set forth by the International Amateur Radio Union G1B03 (B) [97.203g] Which of the following types of stations may transmit only one-way communications? 一方向通信のみを行っても良い無線局は次の内どれか？ A. Repeater station B. Beacon station 　　　ビーコン局。 C. HF station D. VHF station G1B04 (A) [97.113b] Which of the following does NOT need to be true when an amateur station is being used to gather news information for broadcast purposes? アマチュア局が放送目的でニュース取材を行う時、必ずしもそうでなくても良い事は次の内どれか？ A. The information is more quickly transmitted by Amateur Radio 　　　アマチュア局による方が情報がより早く送信される。 B. The information must involve the immediate safety of life of individuals or the immediate protection of property C. The information must be directly related to the event D. The information cannot be transmitted by other means G1B05 (D) [97.113e] Under what limited circumstances may music be transmitted by an amateur station? アマチュア局による音楽の送信が許される場合は次の内どれか？ A. When it produces no dissonances or spurious emissions B. When it is used to jam an illegal transmission C. When it is transmitted on frequencies above 1215 MHz D. When it is an incidental part of a space shuttle retransmission 　　　スペースシャトル中継通信の中にたまたま入っていた場合。 G1B06 (C) [97.113a4] When may an amateur station in two-way communication transmit a message in a secret code in order to obscure the meaning of the communication? アマチュア局が双方向通信で、交信内容を隠す為に暗号を用いて送信してよいのは？ A. When transmitting above 450 MHz B. During contests C. Never 　　　絶対駄目 D. During a declared communications emergency G1B07 (B) [97.113a4] What are the restrictions on the use of abbreviations or procedural signals in the amateur service? アマチュア局が略号や運用信号を用いる時の制限は？ A. Only "Q" codes are permitted B. They may be used if they do not obscure the meaning of a message 　　　略号や運用信号が通信内容を隠さない場合に使って良い。 C. They are not permitted because they obscure the meaning of a message to FCC monitoring stations D. Only "10-codes" are permitted G1B08 (D) [97.113a4, 97.113e] Which of the following amateur station transmissions is NOT prohibited by the FCC Rules? ＦＣＣで禁止されていないアマチュア通信は？ A. The playing of music B. The use of obscene or indecent words C. False or deceptive messages or signals D. Retransmission of space shuttle communications 　　　スペースシャトル交信の中継送信 G1B09 (C) [97.113a4, 97.113e] What should you do to prevent your station from retransmitting music or signals from a non-amateur station? 非アマチュア局からの信号や音楽を中継送信しない為には？ A. Turn up the volume of your transceiver B. Speak closer to the microphone to increase your signal strength C. Turn down the volume of background audio 　　　バックグランド音声のボリュームを絞る。 D. Adjust your transceiver noise blanker G1B10 (A) [97.203] Which of the following is NOT an FCC requirement regarding beacon stations? ビーコン局に関してＦＣＣ規則に無いものは？ A. All transmissions must use audio frequency shift keying (AFSK) 　　　全送信で、ＡＦＳＫを使用しなければならない。 B. Only one signal per band is permitted from a given location C. The transmitter power of the beacon station must not exceed 100 watts D. The control operator of the beacon station must hold a Technician, Technician Plus, General, Advanced or Extra Class operator license G1C Transmitter power standards; certification of external RF- power-amplifiers; standards for certification of external RF-power amplifiers; HF data emission standards G1C01 (A) [97.313c1] What is the maximum transmitting power an amateur station may use on 3690 kHz? アマチュア局が３６９０ＫＨｚで運用出来る最大送信出力は？ A. 200 watts PEP output B. 1000 watts PEP output C. 1500 watts PEP output D. The minimum power necessary to carry out the desired communications, with a maximum of 2000 watts PEP output G1C02 (C) [97.313a,b] What is the maximum transmitting power an amateur station may use on 7080 kHz? アマチュア局が７０８０ＫＨｚで運用出来る最大送信出力は？ A. 200 watts PEP output B. 1000 watts PEP output C. 1500 watts PEP output D. 2000 watts PEP output G1C03 (A) [97.313c1] What is the maximum transmitting power an amateur station may use on 10.140 MHz? アマチュア局が１０．１４０ＭＨｚで運用出来る最大送信出力は？ A. 200 watts PEP output B. 1000 watts PEP output C. 1500 watts PEP output D. 2000 watts PEP output G1C04 (B) [97.313c1] What is the maximum transmitting power an amateur station may use on 21.205 MHz? アマチュア局が２１．２５０ＭＨｚで運用出来る最大送信出力は？ A. The minimum power necessary to carry out the desired communications, with a maximum of 200 watts PEP output B. The minimum power necessary to carry out the desired communications, with a maximum of 1500 watts PEP output 　　　１５００Ｗを上限として交信可能な最低限の出力 C. 1000 watts PEP output D. 2000 watts PEP output G1C05 (C) [97.313a,b] What is the maximum transmitting power an amateur station may use on 24.950 MHz? アマチュア局が２４．９５０ＭＨｚで運用出来る最大送信出力は？ A. 200 watts PEP output B. 1000 watts PEP output C. 1500 watts PEP output D. 2000 watts PEP output G1C06 (B) [97.313] What is the maximum transmitting power an amateur station may use on 7155 kHz? アマチュア局が７１５５ＫＨｚで運用出来る最大送信出力は？ A. The minimum power necessary to carry out the desired communications, with a maximum of 200 watts PEP output B. The minimum power necessary to carry out the desired communications, with a maximum of 1500 watts PEP output 　　　１５００Ｗを上限として交信可能な最低限の出力 C. 1000 watts PEP output D. 2000 watts PEP output G1C07 (A) [97.313] What is the maximum transmitting power an amateur station may use on 14.300 MHz? アマチュア局が１４．３００ＭＨｚで運用出来る最大送信出力は？ A. The minimum power necessary to carry out the desired communications, with a maximum of 1500 watts PEP output 　　　１５００Ｗを上限として交信可能な最低限の出力 B. 200 watts PEP output C. 1000 watts PEP output D. 2000 watts PEP output G1C08 (C) [97.313] What is the maximum transmitting power a station with a General Class control operator may use on 28.400 MHz? ジェネラル級アマチュア運用者が２８．４００ＭＨｚで運用出来る最大送信出力は？ A. The minimum power necessary to carry out the desired communications, with a maximum of 200 watts PEP output B. The minimum power necessary to carry out the desired communications, with a maximum of 1000 watts PEP output C. The minimum power necessary to carry out the desired communications, with a maximum of 1500 watts PEP output 　　　１５００Ｗを上限として交信可能な最低限の出力 D. 2000 watts PEP output G1C09 (C) [97.313] What is the maximum transmitting power a station with a General Class control operator may use on 28.150 MHz? ジェネラル級アマチュア運用者が２８．１５０ＭＨｚで運用出来る最大送信出力は？ A. The minimum power necessary to carry out the desired communications, with a maximum of 200 watts PEP output B. The minimum power necessary to carry out the desired communications, with a maximum of 1000 watts PEP output C. The minimum power necessary to carry out the desired communications, with a maximum of 1500 watts PEP output 　　　１５００Ｗを上限として交信可能な最低限の出力 D. The minimum power necessary to carry out the desired communications, with a maximum of 2000 watts PEP output G1C10 (D) [97.313] What is the maximum transmitting power an amateur station may use on 1825 kHz? アマチュア局が１８２５ＫＨｚで運用出来る最大送信出力は？ A. 200 watts PEP output B. The minimum power necessary to carry out the desired communications, with a maximum of 1000 watts PEP output C. 2000 watts PEP output D. The minimum power necessary to carry out the desired communications, with a maximum of 1500 watts PEP output 　　　１５００Ｗを上限として交信可能な最低限の出力 G1C11 (D) Which of the following is NOT a requirement when a station is transmitting on the 60-meter band? ６０ｍ帯で送信する時規則に無いものは？ A. All transmissions may only use Upper Sideband (USB) B. The 3-dB bandwidth of a signal shall not exceed 2.8 kHz, when centered on any of the five FCC-authorized transmitting frequencies C. Transmissions shall not exceed an effective radiated power (ERP) of 50 W PEP D. Antenna height shall not exceed 50 feet above mean sea level (AMSL) 　　　アンテナ高は、平均海抜から５０フィート高を超えない事。 G1D Examination element preparation; examination administration; temporary station identification G1D01 (B) [97.507a2] What examination elements may you prepare when you hold a General class operator license? ジェネラル級免許所持者が準備出来る試験エレメントは？ A. None B. Elements 1 and 2 only 　　　エレメント１と２のみ。 C. Element 1 only D. Elements 1, 2 and 3 G1D02 (C) [97.509b3i] What license examinations may you administer when you are an accredited VE holding a General Class operator license? ジェネラル級免許所持者で認可を受けたＶＥが監督出来る免許試験は？ A. None B. General only C. Technician and Morse code 　　　テクニシャンとモールス符号。 D. Technician, General and Amateur Extra G1D03 (A) [97.501e] What minimum examination elements must an applicant pass for a Technician Class operator license? テクニシャン級免許を取る為に最低パスしなければならない試験エレメントは？ A. Element 2 only 　　　エレメント２のみ。 B. Elements 1 and 2 C. Elements 2 and 3 D. Elements 1, 2 and 3 G1D04 (B) [97.501d] What minimum examination elements must an applicant pass for a Technician Class operator license with Morse code credit to operate on the HF bands? ＨＦ帯で運用するためにモールス信号認可付きテクニシャン級免許を取る為に 最低パスしなければならない試験エレメントは？ A. Element 2 only B. Elements 1 and 2 　　　エレメント１と２。 C. Elements 2 and 3 D. Elements 1, 2 and 3 G1D05 (A) [97.509a,b] What are the requirements for administering a Technician Class operator examination? テクニシャン級試験を監督する為に必要なものは？ A. Three VEC-accredited General Class or higher VEs must be present 　　　ＶＥＣに認証されたジェネラル級以上の免許を持つＶＥ３人。 B. Two VEC-accredited General Class or higher VEs must be present C. Two General Class or higher VEs must be present, but only one need be VEC accredited D. Any two General Class or higher VEs must be present G1D06 (D) [97.509b3i] When may you participate as an administering VE for a Technician Class operator license examination? テクニシャン級免許試験にＶＥ監督官として参加するには？ A. Once you have notified the FCC that you want to give an examination B. Once you have a Certificate of Successful Completion of Examination (CSCE) for General class C. Once you have prepared telegraphy and written examinations for the Technician license, or obtained them from a qualified supplier D. Once you have been granted your FCC General class or higher license and received your VEC accreditation 　　　ＦＣＣのジェネラル級以上の免許を持っていてＶＥＣの認証を受ける。 G1D07 (B) [97.119f2] If you are a Technician Class operator with a CSCE for General Class operator privileges, how do you identify your station when transmitting on 14.035 MHz? ジェネラル権限許可の試験合格証を持つテクニシャン級免許所持者が １４．０３５ＭＨｚで送信する時のコールサインは？ A. You must give your call sign and the location of the VE examination where you obtained the CSCE B. You must give your call sign, followed by the slant mark "/", followed by the identifier "AG" 　　　コールサインの後ろに／をつけて更にその後ろにＡＧをつける。 C. You may not operate on 14.035 MHz until your new license arrives D. No special form of identification is needed G1D08 (C) [97.119f2] If you are a Technician Class operator with a CSCE for General Class operator privileges, how do you identify your station when transmitting phone emissions on 14.325 MHz? ジェネラル権限許可の試験合格証を持つテクニシャン級免許所持者が １４．３２５ＭＨｚで送信する時のコールサインは？ A. No special form of identification is needed B. You may not operate on 14.325 MHz until your new license arrives C. You must give your call sign, followed by any suitable word that denotes the slant mark and the identifier "AG" 　　　コールサインの後ろに／をつけて更にその後ろにＡＧをつける。 D. You must give your call sign and the location of the VE examination where you obtained the CSCE G1D09 (A) [97.119f2] If you are a Technician Class operator with a CSCE for General Class operator privileges, when must you add the special identifier "AG" after your call sign? ジェネラル権限許可の試験合格証を持つテクニシャン級免許所持者が コールサインの後ろにＡＧをつけなければならないのは？ A. Whenever you operate using your new frequency privileges 　　　新しい周波数権限を使って運用する時 B. Whenever you operate C. Whenever you operate using Technician frequency privileges D. A special identifier is not required as long as your General class license application has been filed with the FCC G1D10 (D) [97.119f2] If you are a Technician Class operator with a CSCE for General Class operator privileges, on which of the following band segments must you include the special identifier "AG" after your call sign? ジェネラル権限許可の試験合格証を持つテクニシャン級免許所持者が コールサインの後ろにＡＧをつけなければならない周波数範囲は？ A. Whenever you operate from 18068 - 18168-kHz B. Whenever you operate from 14025 - 14150-kHz and 14225 - 14350-kHz C. Whenever you operate from 10100 - 10150-kHz D. All of these choices are correct 　　　上記全部 G1D11 (D) [97.509b3i] When may you participate as a VE in administering a Morse code examination? モールス符号試験にＶＥ監督官として参加するには？ A. Once you have notified the FCC that you want to give an examination B. Once you have a Certificate of Successful Completion of Examination (CSCE) for General class C. Once you have prepared telegraphy and written examinations for the Technician license, or obtained them from a qualified supplier D. Once you have been granted your FCC General Class or higher operator license and received your VEC accreditation 　　　ＦＣＣのジェネラル級以上の免許を持っていてＶＥＣの認証を受ける。 G1D12 (C) [97.119f2] If you are a Technician licensee with Morse code credit and hold a CSCE for Element 3, what is one way you could identify your station when transmitting phone emissions on a General class amateur frequency? モールス符号単位が在って、エレメント３の試験合格証を持つテクニシャン級免許人が ジェネラル級アマチュア周波数で音声送信する時に自局を通報する方法は？ A. Give your call sign followed by the words "general class" B. No special identification is needed, since your license upgrade would already be shown in the FCC's database C. Give your call sign followed by the words "temporary AG" 　　　コールサインの後ろに「暫定ＡＧ」を付ける。 D. You must wait until your new license arrives by mail from the FCC before using general class frequencies G1E Local control; repeater and harmful interference definitions; third party communications G1E01 (B) [97.119e] As a General Class control operator at the station of a Technician Class operator, how must you identify the station while transmitting on 7250 kHz? テクニシャン級無線局でジェネラル級コントロール運用者が７２５０ＫＨｚで 送信する時のコールサインは？ A. With your call sign, followed by the word "controlling" and the Technician call sign B. With the Technician Class operator's station call sign, followed by the slant bar "/" (or any suitable word) and your own call sign 　　　テクニシャン級のコールサインの後ろに／をつけて更にその後ろに自分のコールサインをつける。 C. With your call sign, followed by the slant bar "/" (or any suitable word) and the Technician call sign D. A Technician station should not be operated on 7250-kHz, even with a General control operator G1E02 (D) [97.205a] Under what circumstances may a 10-meter repeater retransmit the 2-meter signal from a station having a Technician Class control operator? １０ｍのリピーターがテクニシャン級運用者からの２ｍ信号を送信出来るのは？ A. Under no circumstances B. Only if the station on 10 meters is operating under a Special Temporary Authorization allowing such retransmission C. Only during an FCC-declared general state of communications emergency D. Only if the 10-meter control operator holds at least a General class license 　　　１０ｍのコントロール運用者が最低ジェネラル級免許を所持している時のみ。 G1E03 (A) [97.3a37] What kind of amateur station simultaneously retransmits the signals of other stations on a different channel? 他の局の信号を同時に違うチャンネルに送信するアマチュア局は？ A. Repeater station 　　　リピーター局。 B. Space station C. Telecommand station D. Relay station G1E04 (B) [97.3a22] What name is given to a form of interference that seriously degrades, obstructs or repeatedly interrupts a radiocommunication service? 無線通信を重度に劣化させたり、妨害、若しくは、反復して遮断する混信は？ A. Intentional interference B. Harmful interference 　　　有害混信 C. Adjacent interference D. Disruptive interference G1E05 (C) [97.115, 97.117] What types of messages for a third party may be transmitted by an amateur station to a foreign country? 交信者以外の者の為に、アマチュア局が外国へ送信出来る通信の内容は？ A. Messages for which the amateur operator is paid B. Messages facilitating the business affairs of any party C. Messages of a technical nature or remarks of a personal character 　　　技術的性質、若しくは、個人的な内容 D. No messages may be transmitted to foreign countries for third parties G1E06 (A) [97.3a23] Should a repeater cause harmful interference to another repeater when a frequency coordinator has recommended the operation of one station only, who is responsible for resolving the interference? 或るリピーターが他のリピーターに有害混信を起こしており、周波数調整者が どちらかのリピーターの運用を推薦した時、混信の解決を行う者は？ A. The licensee of the uncoordinated repeater 　　　調整されなかったリピーターの免許人 B. Both repeater licensees C. The licensee of the recommended repeater D. The frequency coordinator G1E07 (C) [97.303] What does it mean where the FCC rules say that the amateur service is a secondary user and another service is a primary user? ＦＣＣがアマチュア運用は周波数帯の副使用者で他の無線運用が主使用者であると 言う意味は？ A. Nothing special; all users of the frequency band have equal rights to operate B. Amateur stations are only allowed to use the frequency band during emergencies C. Amateur stations are allowed to use the frequency band only if they do not cause harmful interference to primary users 　　　アマチュアは主使用者の運用に有害混信を与えない時に限り当該周波数を使用出来る。 D. Amateur stations must increase transmitter power to overcome any interference caused by primary users G1E08 (D) [97.303] What action must you take while using the 30-meter band when a station assigned to the band's primary service causes interference? ３０ｍ帯を使用中に帯域の主使用者の運用が混信を起こす場合、何をするか？ A. Notify the FCC's regional Engineer in Charge of the interference B. Increase your transmitter's power to overcome the interference C. Attempt to contact the station and request that it stop the interference D. Change frequencies; you may be causing harmful interference to the other station, in violation of FCC rules 　　　周波数を変更する；ＦＣＣ規定に違反して他局に有害混信を起こしている可能性が在る。 G1E09 (C) [97.119b2] While you are using a language other than English in making a contact, what language must you use when identifying your station? 英語以外でコンタクトを取っている時、コールサインは何語で送るか？ A. The language being used for the contact B. The language being used for the contact, provided the US has a third-party communications agreement with that country C. English 　　　英語で。 D. Any language of a country that is a member of the International Telecommunication Union G1E10 (A) [97.303s] What protection from harmful interference caused by primary service users do amateur radio stations have while operating in the 60-meter band? ６０ｍ帯で運用している時に、主使用者の運用が起こす有害混信を防ぐ手段は？ A. None 　　　無い。 B. Stations in the mobile and fixed service must not interfere with amateur stations C. Stations in the mobile and fixed service must not interfere if an amateur station is already on the frequency D. Stations in the mobile and fixed service must not interfere with amateur stations if they are located in ITU Region 2 G1E11 (A) [97.303s] What operating restrictions must amateur radio stations observe while operating in the 60-meter band? ６０ｍ帯で運用中にアマチュア局が守らなければならない運用規則は？ A. They must not cause harmful interference to stations operating in other radio services 　　　他の無線業務で運用中の局に有害混信を与えてはならない。 B. They must transmit no more than 30 minutes during each hour to minimize harmful interference C. They must use lower sideband, suppressed-carrier, only D. They must not exceed 2.0 kHz of bandwidth G1E12 (B) [97.109e] What must be done at an amateur radio station while it is transmitting third party messages? 第三者通信を送信している時に、アマチュア無線局がしなくてはいけない事は？ A. Keep a station log of when the message was handled B. Use local or remote station control 　　　局の、現場、若しくは、遠隔操作。 C. Identify both stations that handle the message D. Use local, remote or automatic station control G1F Certification of external RF-power-amplifiers; standards for certification of external RF-power amplifiers; HF data emission standards G1F01 (D) [97.315a] External RF power amplifiers designed to operate below what frequency may require FCC certification? 何ＭＨｚ以下で運用するよう設計された外部ＲＦパワーアンプにＦＣＣ認可が必要か？ A. 28 MHz B. 35 MHz C. 50 MHz D. 144 MHz G1F02 (B) [97.315a] Without a grant of FCC certification, how many external RF amplifiers of a given design capable of operation below 144 MHz may you build or modify in one calendar year? ＦＣＣの認可無しで、１４４ＭＨｚ以下で運用可能な設計の外部ＲＦパワーアンプは １年間に何台作成、若しくは、変更出来るか？ A. None B. 1 C. 5 D. 10 G1F03 (B) [97.317a3] Which of the following standards must be met where FCC certification of an external RF amplifier is required? ＦＣＣの認可が必要な場合、外部ＲＦパワーアンプはどの基準を満たさなければならないか？ A. The amplifier must not be able to amplify a 28-MHz signal to more than ten times the input power B. The amplifier must not be capable of reaching its designed output power when driven with less than 50 watts 　　　５０Ｗ以下で運転する時は、設計出力に達しない事。 C. The amplifier must not be able to be operated for more than ten minutes without a time delay circuit D. The amplifier must not be able to be modified by an amateur operator G1F04 (D) [97.317b,c] Which of the following would NOT disqualify an external RF power amplifier from a FCC certification grant? 外部ＲＦパワーアンプにＦＣＣ認可を受けるに当り、問題とならない事は？ A. The capability of being modified by the operator for use outside the amateur service bands B. The capability of achieving full output power when driven with less than 50 watts C. The capability of achieving full output power on amateur service frequencies between 24 and 35 MHz D. The capability of being switched by the operator to all amateur service frequencies below 24 MHz 　　　運用者によって、２４ＭＨｚ以下の全アマチュア周波数に切り替え可能な事。 G1F05 (D) [97.305c, 97.307f3] What is the maximum symbol rate permitted for RTTY emissions transmitted on frequency bands below 10 meters? １０ｍ以下の周波数帯で送信するＲＴＴＹ通信の最大送信レートは？ A. 56 kilobauds B. 19.6 kilobauds C. 1200 bauds D. 300 bauds G1F06 (C) [97.307f5] What is the maximum symbol rate permitted for packet emission transmissions on the 2-meter band? ２ｍ帯で送信するパケット通信の最大送信レートは？ A. 300 bauds B. 1200 bauds C. 19.6 kilobauds D. 56 kilobauds G1F07 (C) [97.307f4] What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band? １０ｍ帯で送信するＲＴＴＹ、若しくは、データ通信の最大送信レートは？ A. 56 kilobauds B. 19.6 kilobauds C. 1200 bauds D. 300 bauds G1F08 (B) [97.307f5] What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 6- and 2-meter bands? ６、若しくは、２ｍ帯で送信するＲＴＴＹ、若しくは、データ通信の最大送信レートは？ A. 56 kilobauds B. 19.6 kilobauds C. 1200 bauds D. 300 bauds G1F09 (A) [97.307f5] What is the maximum authorized bandwidth for RTTY, data or multiplexed emissions using an unspecified digital code transmitted on the 6- and 2-meter bands? ６ｍと２ｍ帯での非特定デジタル符号を使ったＲＴＴＹ、データ、多重送信の最大バンド幅は？ A. 20 kHz B. 50 kHz C. The total bandwidth shall not exceed that of a single-sideband phone emission D. The total bandwidth shall not exceed 10 times that of a CW emission G1F10 (A) [97.317b] What must an external RF amplifier exhibit in order to receive a FCC grant of certification? 外部ＲＦアンプがＦＣＣの認可を受ける為には？ A. It must not be capable of operation on any frequency between 24 MHz and 35 MHz 　　　２４ＭＨｚと３５ＭＨｚの間の周波数で運用できない事。 B. Its wiring must be accessible to permit modification of the amplifier C. It must have an internal RF sensing switch to place the amplifier in the transmit mode D. Its manual must provide instructions for modification of the amplifier G1F11 (A) [97.317b1] What is the maximum power gain that a 10-meter RF amplifier can have to receive FCC certification? １０ｍの外部ＲＦアンプがＦＣＣの認可を受ける事の出来る最大出力ゲインは？ A. 6 dB B. 3 dB C. 4 dB D. 10 dB SUBELEMENT G2 -- OPERATING PROCEDURES [6 Exam Questions -- 6 Groups] G2A Phone operating procedures G2A01 (A) Which sideband is commonly used for 20-meter phone operation? ２０ｍの音声運用で通常用いられる側波帯は？ A. Upper 　　　上側。 B. Lower C. Amplitude compandored D. Double G2A02 (B) Which sideband is commonly used on 3925-kHz for phone operation? ３９２５ＫＨｚの音声運用で通常用いられる側波帯は？ A. Upper B. Lower 　　　下側。 C. Amplitude compandored D. Double G2A03 (B) Which sideband is commonly used for 40-meter phone operation? ４０ｍの音声運用で通常用いられる側波帯は？ A. Upper B. Lower 　　　下側。 C. Amplitude compandored D. Double G2A04 (D) Which sideband is commonly used for 10-meter phone operation? １０ｍの音声運用で通常用いられる側波帯は？ A. Double B. Lower C. Amplitude compandored D. Upper 　　　上側。 G2A05 (A) Which sideband is commonly used for 15-Meter phone operation? １５ｍの音声運用で通常用いられる側波帯は？ A. Upper 　　　上側。 B. Lower C. Amplitude compandored D. Double G2A06 (C) Which sideband is commonly used for 17-Meter phone operation? １７ｍの音声運用で通常用いられる側波帯は？ A. Amplitude compandored B. Lower C. Upper 　　　上側。 D. Double G2A07 (C) Which of the following modes of voice communication is most commonly used on the High Frequency Amateur bands? アマチュアのＨＦ帯で通常用いられる音声通信方式は？ A. Frequency modulation (FM) B. Amplitude modulation (AM) C. Single sideband (SSB) 　　　片側側波帯 D. Phase modulation (PM) G2A08 (D) Why is the single sideband mode of voice transmission used more frequently than Amplitude Modulation (AM) on the HF amateur bands? 片側側波帯方式音声送信がアマチュアのＨＦ帯で振幅変調よりも良く使われる理由は？ A. Single sideband transmissions use less spectrum space 　　　片側側波帯送信は、少ないバンド幅を使用する。 B. Single sideband transmissions are more power efficient 　　　片側側波帯送信は、電力効率が高い。 C. No carrier is transmitted with a single sideband transmission 　　　片側側波帯送信は、搬送波を送信しない。 D. All of these choices are correct 　　　上記全て正しい。 G2A09 (B) Which of the following statements is true of a lower sideband transmission? 下側側波帯送信について正しいのは？ A. It is called lower sideband because the lower sideband is greatly attenuated B. It is called lower sideband because the lower sideband is the only sideband transmitted, since the upper sideband is suppressed 　　　上側側波帯が抑制されて下側側波帯のみ送信されるからそう呼ばれる。 C. The lower sideband is wider than the upper sideband D. The lower sideband is the only sideband that is authorized on the 160-, 75- and 40-meter amateur bands G2A10 (A) Which of the following statements is true of an upper sideband transmission? 上側側波帯送信について正しいのは？ A. Only the upper sideband is transmitted, since the lower sideband is suppressed 　　　下側側波帯が抑制されて上側側波帯のみ送信される B. The upper sideband is greatly attenuated as compared with the carrier C. The upper sideband is greatly attenuated as compared with the lower sideband D. Only the upper sideband may be used for phone transmissions on the amateur bands with frequencies above 14 MHz G2A11 (D) Why do most amateur stations use lower sideband on the 160-, 75- and 40-meter bands? 殆どのアマチュア局が１６０、７５、４０ｍ帯で下側側波帯を使う理由は？ A. The lower sideband is more efficient at these frequency bands B. The lower sideband is the only sideband legal on these frequency bands C. Because it is fully compatible with an AM detector D. Current amateur practice is to use lower sideband on these frequency bands 　　　現在のアマチュア局は、それらの周波数帯では、もっぱら下側側波帯を使う慣わし G2B Operating courtesy G2B01 (C) If you are the net control station of a daily HF net, what should you do if the frequency on which you normally meet is in use just before the net begins? 通常運用する周波数が使用中である場合、ＨＦネットのネットコントロール局はどうするか？ A. Reduce your output power and start the net as usual B. Increase your power output so that net participants will be able to hear you over the existing activity C. Conduct the net on a clear frequency 3 to 5-kHz away from the regular net frequency 　　　通常のネット周波数から３−５ＫＨｚ離れた空き周波数でネットを指揮する。 D. Cancel the net for that day G2B02 (A) If a net is about to begin on a frequency which you and another station are using, what should you do? 使用中の周波数で、ネットが始まろうとする時どうするか？ A. As a courtesy to the net, move to a different frequency 　　　ネットへの儀礼として、他の周波数に移動する。 B. Increase your power output to ensure that all net participants can hear you C. Transmit as long as possible on the frequency so that no other stations may use it D. Turn off your radio G2B03 (C) If propagation changes during your contact and you notice increasing interference from other activity on the same frequency, what should you do? 電波の伝播状態が変化して、同じ周波数の他の交信からの混信が大きくなってきたらどうするか？ A. Tell the interfering stations to change frequency, since you were there first B. Report the interference to your local Amateur Auxiliary Coordinator C. Move your contact to another frequency 　　　他の周波数へ移る。 D. Turn on your amplifier to overcome the interference G2B04 (B) When selecting a CW transmitting frequency, what minimum frequency separation from a contact in progress should you allow to minimize interference? ＣＷ送信周波数を決める時、交信中の周波数との混信を最小限にする為の周波数距離は？ A. 5 to 50 Hz B. 150 to 500 Hz C. 1 to 3 kHz D. 3 to 6 kHz G2B05 (B) When selecting a single-sideband phone transmitting frequency, what minimum frequency separation from a contact in progress should you allow (between suppressed carriers) to minimize interference? 片側側波帯送信周波数を決める時、交信中の周波数との混信を最小限にする為の 周波数距離（抑圧搬送波間）は A. 150 to 500 Hz B. Approximately 3 kHz 　　　おおよそ３ｋＨｚ。 C. Approximately 6 kHz D. Approximately 10 kHz G2B06 (B) When selecting a RTTY transmitting frequency, what minimum frequency separation from a contact in progress should you allow (center to center) to minimize interference? ＲＴＴＹ送信周波数を決める時、交信中の周波数との混信を最小限にする為の 周波数距離（中間から中間）は？ A. 60 Hz B. 250 to 500 Hz C. Approximately 3 kHz D. Approximately 6 kHz G2B07 (A) What is a band plan? バンドプランとは？ A. A voluntary guideline beyond the divisions established by the FCC for using different operating modes within an amateur band 　　　ＦＣＣが決めたアマチュアバンドの中で異なる運用方式を使う為の自主的なガイドライン。 B. A guideline from the FCC for making amateur frequency band allocations C. A plan of operating schedules within an amateur band published by the FCC D. A plan devised by a club to best use a frequency band during a contest G2B08 (A) What is another name for a voluntary guideline that guides amateur activities and extends beyond the divisions established by the FCC for using different operating modes within an amateur band? ＦＣＣが決めたアマチュアバンドの中で異なる運用方式を使う為の自主的なガイドラインの別名は？ A. A "Band Plan" 　　　バンドプラン B. A "Frequency and Solar Cycle Guide" C. The "Knowledgeable Operator's Guide" D. The "Frequency Use Guidebook" G2B09 (D) When choosing a frequency for Slow-Scan TV (SSTV) operation, what should you do to comply with good amateur practice? ＳＳＴＶ運用の周波数を決める時に守るべき事は？ A. Review FCC Part 97 Rules regarding permitted frequencies and emissions 　　　ＦＣＣパート９７を見て周波数と出力を確認する。 B. Follow generally accepted gentlemen's agreement band plans 　　　一般に受け容れられている紳士協定であるバンドプランに従う。 C. Before transmitting, listen to the frequency to be used to avoid interfering with an ongoing communication 　　　送信前に、交信中の通信に混信を与えないように周波数を聞く。 D. All of these choices 　　　上記全て。 G2B10 (D) When choosing a frequency for radioteletype (RTTY) operation, what should you do to comply with good amateur practice? ＲＴＴＹ運用の周波数を決める時に守るべき事は？ A. Review FCC Part 97 Rules regarding permitted frequencies and emissions 　　　ＦＣＣパート９７を見て周波数と出力を確認する。 B. Follow generally accepted gentlemen's agreement band plans 　　　一般に受け容れられている紳士協定であるバンドプランに従う。 C. Before transmitting, first listen to the frequency to be used to avoid interfering with an ongoing communication 　　　送信前に、交信中の通信に混信を与えないように周波数を聞く。 D. All of these choices 　　　上記全て。 G2B11 (D) When choosing a frequency for HF Packet operation, what should you do to comply with good amateur practice? ＨＦ帯のパケット運用の周波数を決める時に守るべき事は？ A. Review FCC Part 97 Rules regarding permitted frequencies and emissions 　　　ＦＣＣパート９７を見て周波数と出力を確認する。 B. Follow generally accepted gentlemen's agreement band plans 　　　一般に受け容れられている紳士協定であるバンドプランに従う。 C. Before transmitting, first listen on the frequency to be used to avoid interfering with an ongoing communication 　　　送信前に、交信中の通信に混信を与えないように周波数を聞く。 D. All of these choices 　　　上記全て。 G2B12 (A) What is a considerate way to avoid harmful interference when using phone? 音声を使う時、有害混信を避ける良い方法は？ A. Ask if the frequency is in use, and say your call sign 　　　周波数が使われていないか訊いて、自分のコールサインを言う。 B. Call MAYDAY to make sure that the frequency is clear C. Call CQ for two minutes and see if anyone responds D. Turn on your amplifier, then go ahead and transmit G2B13 (C) What is a considerate way to avoid harmful interference when using Morse code or CW? モールス符号、即ち、ＣＷを使う時、有害混信を避ける良い方法は？ A. Send the letter "V" 12 times and then listen for a response B. Call CQ for two minutes and see if anyone responds C. Send "QRL? de" followed by your call sign and listen for a response 　　　「ＱＲＬ？　ｄｅ」に続けて自局のコールサインを送信し、応答を聞く。 D. Turn on your amplifier, then go ahead and transmit G2C Emergencies, including drills and emergency communications G2C01 (C) What means may an amateur station in distress use to attract attention, make known its condition and location, and obtain assistance? 遭難したアマチュア局が受信してもらい、状況と場所を知らせ、援助を得る為に行って良い事は？ A. Only Morse code signals sent on internationally recognized emergency channels B. Any means of radiocommunication, but only on internationally recognized emergency channels C. Any means of radiocommunication 　　　無線通信のあらゆる手段。 D. Only those means of radiocommunication for which the station is licensed G2C02 (A) During a disaster in the US, when may an amateur station make transmissions necessary to meet essential communication needs and assist relief operations? 米国内の災害時、アマチュア局は、必要な通信と救援活動を援護する送信をいつ行うか？ A. When normal communication systems are overloaded, damaged or disrupted 　　　通常の通信系統がパンクしているか、破損、若しくは、遮断している時。 B. Only when the local RACES net is activated C. Never; only official emergency stations may transmit in a disaster D. When normal communication systems are working but are not convenient G2C03 (A) If a disaster disrupts normal communications in your area, what may the FCC do? 地域の通常の通信系統が災害によって遮断された時、ＦＣＣが行う事がある事は？ A. Declare a temporary state of communication emergency 　　　臨時通信非常事態を宣言する。 B. Temporarily seize your equipment for use in disaster communications C. Order all stations across the country to stop transmitting at once D. Nothing until the President declares the area a disaster area G2C04 (D) If a disaster disrupts normal communications in an area what would the FCC include in any notice of a temporary state of communication emergency? 地域の通常の通信系統が災害によって遮断された時、ＦＣＣが臨時通信非常事態の お知らせに含むことの在るものは？ A. Any additional test questions needed for the licensing of amateur emergency communications workers B. A list of organizations authorized to temporarily seize your equipment for disaster communications C. Any special conditions requiring the use of non-commercial power systems D. Any special conditions and special rules to be observed by stations during the emergency 　　　非常時に局が守るべき特別な条件や規則。 G2C05 (D) During an emergency, what power output limitations must be observed by a station in distress? 非常時に、遭難した局が守るべき出力は？ A. 200 watts PEP B. 1500 watts PEP C. 1000 watts PEP during daylight hours, reduced to 200 watts PEP during the night D. There are no limitations during an emergency 　　　非常時に制限は一切無い。 G2C06 (C) During a disaster in the US, what frequencies may be used to obtain assistance? 米国内の災害時に、援助を求める為の周波数は？ A. Only frequencies in the 80-meter band B. Only frequencies in the 40-meter band C. Any frequency 　　　どんな周波数でも良い。 D. Any United Nations approved frequency G2C07 (B) If you are communicating with another amateur station and hear a station in distress break in, what is the first thing you should do? 交信中に遭難した局が割り込んできた時、最初にする事は？ A. Continue your communication because you were on frequency first B. Acknowledge the station in distress and determine its location and what assistance may be needed 　　　遭難した局に確認を送り、位置とどのような支援が必要かを知る。 C. Change to a different frequency so the station in distress may have a clear channel to call for assistance D. Immediately cease all transmissions because stations in distress have emergency rights to the frequency G2C08 (A) Why do stations in the Radio Amateur Civil Emergency Service (RACES) participate in training tests and drills? 無線アマチュア民間非常時活動に加わっている局が訓練テストや演習に参加するのは？ A. To provide orderly and efficient operations for the civil defense organization they serve in the event of an emergency 　　　参加する民間防衛組織が組織的かつ効率的に活動するように練習する為。 B. To ensure that members attend monthly on-the-air meetings of the civil defense organization they serve C. To ensure that RACES members are able to conduct tests and drills D. To acquaint members of RACES with other members they may meet in an emergency G2C09 (C) When are you prohibited from helping a station in distress? 遭難した局を援助してはいけない時は？ A. When that station is not transmitting on amateur frequencies B. When the station in distress offers no call sign C. You are not ever prohibited from helping any station in distress 　　　遭難した局の援助はいかなる場合も禁止されない。 D. When the station is not another amateur station G2C10 (B) When FCC declares a temporary state of communication emergency, what must you do? ＦＣＣが臨時通信非常事態を宣言した時、何をするか？ A. Stay off the air until 30 days after FCC lifts the emergency notice B. Abide by the limitations or conditions set forth in the FCC notice 　　　ＦＣＣの通達に書かれた制限や条件を遵守する。 C. Only communicate with stations within 2 miles of your location D. Nothing; wait until the President declares a formal emergency before taking further action G2C11 (C) During a disaster in the US, which of the following emission modes must be used to obtain assistance? 米国内の災害時に、援助を求める為の発信方式は？ A. Only SSB B. Only SSB and CW C. Any mode 　　　どんな方式でも良い。 D. Only CW G2C12 (B) What information should anyone who sends a distress transmission give to stations who answer? 遭難信号を送信した局が応答した局に伝える情報は？ A. The ITU region and grid square locator of the emergency B. The location and nature of the distress 　　　遭難場所と内容。 C. The time that the emergency occurred and the names of the persons involved D. The agencies to notify and the name of the emergency coordinator G2C13 (A) What frequency should be used to send a distress call? 遭難信号を送る為の周波数波？ A. Whatever frequency has the best chance of communicating the distress message 　　　遭難信号を伝える可能性が最も大きい周波数ならどれでも良い。 B. 3873 kHz at night or 7285 kHz during the day C. Only frequencies that are within your operating privileges D. Only frequencies used by police, fire or emergency medical services G2D Amateur auxiliary to the FCC's Compliance and Information Bureau; antenna orientation to minimize interference; HF operations, including logging practices G2D01 (A) What is the Amateur Auxiliary to the FCC's Compliance and Information Bureau? ＦＣＣの電波管理及び情報局に対するアマチュア周辺活動組織とは？ A. Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations 　　　電波を監視して規則違反を見つける為に正式に登録されたアマチュアのボランティア。 B. Amateur volunteers who conduct amateur licensing examinations C. Amateur volunteers who conduct frequency coordination for amateur VHF repeaters D. Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency G2D02 (B) What are the objectives of the Amateur Auxiliary to the FCC's Compliance and Information Bureau? ＦＣＣの電波管理及び情報局に対するアマチュア周辺活動組織の目的は？ A. To conduct efficient and orderly amateur licensing examinations B. To encourage amateur self-regulation and compliance with the rules 　　　アマチュアの自己規制と規則遵守を推進する。 C. To coordinate repeaters for efficient and orderly spectrum usage D. To provide emergency and public safety communications G2D03 (B) Why are direction-finding "Fox Hunts" important to the Amateur Auxiliary? 方向探知する”狐狩り”がアマチュア周辺活動組織に重要な理由は？ A. Fox Hunts compel amateurs to upgrade their licenses B. Fox Hunts provide an opportunity to practice direction-finding skills 　　　狐狩りは、方向探知技量の訓練機会となる。 C. Someone always receives an FCC Notice of Apparent Liability (NAL) when a Fox Hunt is concluded D. Fox Hunts allow amateurs to work together with Environmental Protection Agencies G2D04 (B) What is an azimuthal projection map? 頭上点地図とは？ A. A map projection centered on the North Pole B. A map projection centered on a particular location, used to determine the shortest path between points on the surface of the earth 　　　任意地点を中心に投影した地図で、地表の２点間の最短距離を求めるのに使う。 C. A map that shows the angle at which an amateur satellite crosses the equator D. A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit G2D05 (A) What is the most useful type of map to use when orienting a directional HF antenna toward a distant station? 指向性のあるＨＦ帯アンテナを遠方の局に向ける時に使う一番役立つ地図は？ A. Azimuthal projection 　　　頭上点投影 B. Mercator C. Polar projection D. Topographical G2D06 (C) A directional antenna pointed in the long-path direction to another station is generally oriented how many degrees from its short-path heading? 相手局に向けてロングパス方向を指している指向性アンテナは、 ショートパス方向からは何度を向いているか？ A. 45 degrees B. 90 degrees C. 180 degrees 　　　１８０° D. 270 degrees G2D07 (B) [97.103b] If a visiting amateur transmits from your station on 14.325 MHz, which of these is NOT true? ゲストオペレーターが１４．３２５ＭＨｚで送信する場合に正しくないのは？ A. You must first give permission for the visiting amateur to use your station B. You must keep in your station log the call sign of the visiting amateur together with the time and date of transmissions 　　　免許局のログにゲストオペレーターのコールサイン、送信の日時を記録しておく。 C. The FCC may think that you were the station's control operator, unless your station records show otherwise D. You both are equally responsible for the proper operation of the station G2D08 (D) Why should I keep a log if the FCC doesn't require it? ＦＣＣが義務としないのに、何故ログをつけるのか？ A. To help with your reply, if FCC requests information on who was control operator of your station for a given date and time 　　　ＦＣＣが任意日時でのコントロールオペレーターが誰だったか聞いてくる時に回答し易い。 B. Logs provide information (callsigns, dates & times of contacts) used for many operating contests and awards 　　　運用コンテストや賞の為のデータ（コールサイン、交信日時）となる。 C. Logs are necessary to accurately verify contacts made weeks, months or years earlier, especially when completing QSL cards 　　　ＱＳＬカードを書く時、以前の交信の証拠になる。 D. All of these choices 　　　上記、全て正しい。 G2D09 (D) What information is normally contained in a station log? 局のログには、通常何が含まれるか？ A. Date and time of contact 　　　交信日時 B. Band and/or frequency of the contact 　　　交信バンド帯、周波数 C. Call sign of station contacted and the RST signal report given 　　　交信相手局のコールサインとＲＳＴレポート D. All of these choices 　　　これら全部 G2D10 (C) Which of the following is a good reason to keep a log of your station's activities? 局の運用をログに記録しておく理由は？ A. It is required by the FCC's rules B. It is a tradition from the earliest days of amateur radio C. It can aid you in resolving interference complaints 　　　混信の苦情を解決する時に役に立つ。 D. It can be a source of great enjoyment when reviewed in later years G2D11 (C) Which HF antenna would best be used to focus your signal to minimize interference? 混信を最小限に抑える為、信号の方向を絞って使うのにベストなＨＦアンテナは？ A. A bidirectional antenna B. A horizontal antenna positioned broadside to the desired direction C. A unidirectional antenna 　　　単方向アンテナ。 D. An omnidirectional antenna at low power G2D12 (A) [97.303s] Which of the following is required by the FCC rules when operating in the 60-meter band? ６０ｍ帯で運用する時にＦＣＣから求められる事は？ A. If you are using other than a dipole antenna, you must keep a record of the gain of your antenna 　　　ダイポールアンテナ以外を使うなら、使用したアンテナのゲインを記録に 　　　残しておかなければならない。 B. You must keep a record of the date, time, frequency, power level and stations worked C. No records are required D. You must keep a record of the manufacturer of your equipment and the antenna used G2E Third-party communications; ITU Regions; VOX operation G2E01 (C) [97.117] What type of messages may be transmitted to an amateur station in a foreign country? 外国のアマチュア局に送信出来る通信内容は？ A. Messages of any type B. Messages that are not religious, political, or patriotic in nature C. Messages of a technical nature or personal remarks of relative unimportance 　　　技術的性質、比較的常用でない個人的発言。 D. Messages of any type, but only if the foreign country has a third-party communications agreement with the US G2E02 (B) Which of the following statements is true of VOX operation? ＶＯＸ運用について正しいものは？ A. The received signal is more natural sounding B. This mode allows "Hands Free' operation 　　　この方式は、手を使わない運用が出来る。 C. Frequency spectrum is conserved D. The duty cycle of the transmitter is reduced G2E03 (D) Which of the following user adjustable controls are usually associated with VOX circuitry? ＶＯＸ回路に通常付随する調節可能なものは？ A. Anti-VOX 　　　アンチＶＯＸ B. VOX Delay 　　　ＶＯＸ遅れ C. VOX Sensitivity 　　　ＶＯＸ感度 D. All of these choices are correct 　　　全部正しい。 G2E04 (C) What is the purpose of the VOX sensitivity control? ＶＯＸ感度を調節する目的は？ A. To set the timing of transmitter activation B. To set the audio frequency range at which the transmitter activates C. To set the audio level at which the transmitter activates 　　　送信がＯＮになる音声レベルをセットする為。 D. None of these choices is correct G2E05 (B) In which International Telecommunication Union Region is the continental United States? 米国本土はＩＴＵの何地域になるか？ A. Region 1 B. Region 2 　　　第２地域 C. Region 3 D. Region 4 G2E06 (A) In which International Telecommunication Union Region are Europe and Africa? ヨーロッパとアフリカはＩＴＵの何地域になるか？ A. Region 1 　　　第１地域 B. Region 2 C. Region 3 D. Region 4 G2E07 (C) In which International Telecommunication Union Region is Australia? オーストラリアはＩＴＵの何地域になるか？ A. Region 1 B. Region 2 C. Region 3 　　　第３地域 D. Region 4 G2E08 (C) Which of the following organizations is responsible for international regulation of the radio spectrum? 無線周波数の国際規則に関わる機関は？ A. The International Regulatory Commission B. The International Radio Union C. The International Telecommunications Union 　　　国際電気通信連合 D. The International Frequency-Spectrum Commission G2E09 (D) What do the initials "ITU" stand for? ＩＴＵは何の略号か？ A. Interstate Telecommunications Union B. International Telephony Union C. International Transmission Union D. International Telecommunications Union 　　　国際電気通信連合 G2E10 (B) What is the circuit called that causes a transmitter to automatically transmit when an operator speaks into its microphone? マイクに向かって音声を発すると自動的に送信させる回路の名は？ A. VXO B. VOX 　　　ＶＯＸ C. VCO D. VFO G2E11 (A) What is the best reason to use a headset with an attached microphone and VOX control when using a mobile station? モービル局を使用中に、マイクの付いたヘッドセットとＶＯＸコントロールを使う理由は？ A. For safer, hands-free operation 　　　手の自由が利くより安全な運用の為。 B. It allows you to make quicker transmissions C. To eliminate ambient noise from your transmissions D. To reduce outside distractions while operating G2E12 (A) What function does an anti-VOX circuit perform? アンチＶＯＸ回路が果たす機能とは？ A. It prevents received audio from keying the transmitter 　　　受信音声が送信をＯＮにしないようにする。 B. It prevents background noise from keying the transmitter C. It prevents unauthorized persons from keying the transmitter D. It prevents activation of the transmitter during CW operation G2E13 (A) Which of the following would indicate the completion of the transmitting of a formal message when using phone? 音声を使用中に、正式通信の送信完了を表すものは？ A. The phrase, "End of message" 　　　「通信終了」。 B. The word "Break" C. The Q-signal "QSL?" D. The Q-signal "QRV" G2F CW operating procedures, including procedural signals, Q signals and common abbreviations; full break-in; RTTY operating procedures, including procedural signals and common abbreviations and operating procedures for other digital modes, such as HF packet, AMTOR, PacTOR, G-TOR, Clover and PSK31 G2F01 (D) Which of the following describes full break-in telegraphy (QSK)? フルブレークイン電信とは？ A. Breaking stations send the Morse code prosign BK B. Automatic keyers are used to send Morse code instead of hand keys C. An operator must activate a manual send/receive switch before and after every transmission D. Incoming signals are received between transmitted key pulses 　　　受信信号を送信キーパルス間に受信する。 G2F02 (A) In what segment of the 80-meter band do most data transmissions take place? ８０ｍ帯の中で殆どのデータ送信が行われる帯域は？ A. 3580 - 3620-kHz B. 3500 - 3525-kHz C. 3700 - 3750-kHz D. 3775 - 3825-kHz G2F03 (B) In what segment of the 20-meter band do most RTTY transmissions take place? ２０ｍ帯の中で殆どのＲＴＴＹ送信が行われる帯域は？ A. 14.000 - 14.050 MHz B. 14.070 - 14.095 MHz C. 14.150 - 14.225 MHz D. 14.275 - 14.350 MHz G2F04 (D) Which of the following is NOT correct? 次の内正しくないのは？ A. ASCII is a 7-bit code, with start, stop and parity bits B. The benefit of using AMTOR is its error detection and correction properties C. Baudot is a 5-bit code, with additional start and stop bits D. The two major AMTOR operating modes are SELCAL and LISTEN 　　　ＡＭＴＯＲの主要な２つの運用モードは、ＳＥＬＣＡＬとＬＩＳＴＥＮ。 G2F05 (B) What is the most common frequency shift for RTTY emissions in the amateur HF bands? アマチュアのＨＦ帯で行われるＲＴＴＹ発信で最も一般的な周波数シフトは？ A. 85 Hz B. 170 Hz C. 425 Hz D. 850 Hz G2F06 (A) Why are the string of letters R and Y (sent as "RYRYRYRY...") occasionally used at the beginning of RTTY or other data transmissions? ＲＴＴＹや他のデータ送信の開始時にＲとＹの連続（ＲＹＲＹＲＹと送る）がよく使われる理由は？ A. This allows time to 'tune in' a station prior to the actual message being sent 　　　これによって実際の通信を送る前に局のチューンを取る時間が出来る。 B. To keep these commonly-used keys functional C. These are the important mark and space keys D. To make sure the transmitter is functional before sending a message G2F07 (B) What does the abbreviation "RTTY" stand for? ＲＴＴＹは何の略か？ A. "Returning to you", meaning "your turn to transmit" B. Radioteletype 　　　無線遠隔タイプ C. A general call to all digital stations D. Morse code practice over the air G2F08 (C) What prosign is sent using CW to indicate the end of a formal message? 正式通信の終了を表すＣＷの略符号は？ A. SK - I acknowledge B. BK - break C. AR - end of transmission 　　　ＡＲ−送信終了。 D. KN - called station only, go ahead G2F09 (D) What character sequence is sent using RTTY or other data modes to indicate the end of a formal message? 正式通信の終了を表すＲＴＴＹや他のデータモードの文字列は？ A. CZCZ B. KKKK C. XXXXX D. NNNN G2F10 (A) How many data bits are sent in a single PSK31 character? ＰＳＫ３１の１文字で送られるデータビット数は？ A. The number varies 　　　決まっていない。 B. 5 C. 7 D. 8 G2F11 (C) What part of a data packet contains the routing and handling information? ルーティングや処理情報が含まれるデータパケットの部分は？ A. Directory B. Preamble C. Header 　　　ヘッダー。 D. Footer SUBELEMENT G3 -- RADIO WAVE PROPAGATION [3 Exam Questions -- 3 Groups] G3A Ionospheric disturbances; sunspots and solar radiation G3A01 (A) What can be done at an amateur station to continue communications during a sudden ionospheric disturbance? 突然電離層が乱れた時に交信を続ける為に何をするか？ A. Try a higher frequency 　　　より高い周波数を試す。 B. Try the other sideband C. Try a different antenna polarization D. Try a different frequency shift G3A02 (B) What effect does a sudden ionospheric disturbance have on the day-time ionospheric propagation of HF radio waves? 突然電離層が乱れる時、昼間のＨＦ無線電波の伝わり方にどんな影響が出るか？ A. It disrupts higher-latitude paths more than lower-latitude paths B. It disrupts signals on lower frequencies more than those on higher frequencies 　　　低い周波数の信号をより遮断する。 C. It disrupts communications via satellite more than direct communications D. None, only areas on the night side of the earth are affected G3A03 (C) How long does it take the increased ultraviolet and X-ray radiation from solar flares to affect radio-wave propagation on the earth? 太陽のフレアから増加した紫外線やＸ線の放射が地球の無線電波の 伝わり方に影響を与えるのにどれくらい掛かるか？ A. The effect is almost instantaneous B. 1.5 minutes C. 8 minutes 　　　８分。 D. 20 to 40 hours G3A04 (B) What is solar flux? 太陽フラックスとは？ A. The density of the sun's magnetic field B. The radio energy emitted by the sun 　　　太陽から放射される無線電波エネルギー。 C. The number of sunspots on the side of the sun facing the earth D. A measure of the tilt of the earth's ionosphere on the side toward the sun G3A05 (D) What is the solar-flux index? 太陽フラックス指数とは？ A. A measure of solar activity that is taken annually B. A measure of solar activity that compares daily readings with results from the last six months C. Another name for the American sunspot number D. A measure of solar activity that is taken at a specific frequency 　　　決められた周波数で測定された太陽活動の測定値。 G3A06 (D) What is a geomagnetic disturbance? 地磁気の乱れとは？ A. A sudden drop in the solar-flux index B. A shifting of the earth's magnetic pole C. Ripples in the ionosphere D. A dramatic change in the earth's magnetic field over a short period of time 　　　地球の磁場の短時間に起こる劇的な変化。 G3A07 (A) At which latitudes are propagation paths more sensitive to geomagnetic disturbances? どの緯度の電波路が地磁気の乱れにより敏感か？ A. Those greater than 45 degrees latitude 　　　緯度４５度より上。 B. Those between 5 and 45 degrees latitude C. Those near the equator D. All paths are affected equally G3A08 (B) What can be the effect of a major geomagnetic storm on radio-wave propagation? 大きな地磁気嵐が無線電波の伝わり方に与える影響は？ A. Improved high-latitude HF propagation B. Degraded high-latitude HF propagation 　　　高緯度地域のＨＦ伝播の劣化。 C. Improved ground-wave propagation D. Improved chances of UHF ducting G3A09 (C) When sunspot numbers are high, what is the effect on radio communications? 太陽の黒点数が高い時、無線通信への影響は？ A. High-frequency radio signals are absorbed B. Frequencies above 300 MHz become usable for long-distance communication C. Long-distance communication in the upper HF and lower VHF range is enhanced 　　　高ＨＦ及び低ＶＨＦ領域で遠距離通信が強まる。 D. High-frequency radio signals become weak and distorted G3A10 (A) What is the sunspot number? 太陽黒点数とは？ A. A daily index of sunspot activity 　　　太陽黒点活動の日指標。 B. The number of sunspots observed during one solar rotation C. The number of sunspots observed during a sunspot cycle D. The number of sunspots observed averaged over a seven day period G3A11 (C) What is the sunspot cycle? 太陽黒点周期とは？ A. The 9- to 11-year periods when sunspots move from the sun's pole to its equatorial region B. The 9- to 11-year periods when sunspots cause coronal holes to appear C. The approximately 11-year variation in the sunspot number 　　　太陽黒点数の大体１１年の変動。 D. The approximately 11-year periods when sunspots combine to form flares G3A12 (B) What is the K-index? Ｋ指標とは？ A. A linear index of solar activity B. A measure of geomagnetic stability 　　　地磁気の安定度の値。 C. An index of solar flux measured at Boulder, Colorado D. A daily value measured on a scale from 0 to 400 to express the range of disturbance of the geomagnetic field G3A13 (C) What is the A-index? Ａ指標とは？ A. A monthly linear index of solar activity B. An weekly index of solar flux measured at Boulder, Colorado C. A daily value measured on a scale from 0 to 400 to express the range of disturbance of the geomagnetic field 　　　地磁気界の乱れを０〜４００のスケールで測った日値。 D. An index used by NOAA to correlate the visual color wavelengths seen with Aurora Borealis (Northern Lights) G3A14 (C) How does solar coronal hole activity affect radio communications? 太陽のコロナホールの活動が無線通信に影響を与える原因は？ A. The activity emits charged particles that improve HF communications B. The activity emits charged particles that improve VHF/UHF ducting C. The activity emits charged particles that usually disrupt HF communications 　　　活動が帯電粒子を放射して、ＨＦ通信を遮断する。 D. The activity emits charged particles, but they never reach Earth's magnetosphere G3A15 (D) How long does it take charged particles from coronal mass ejections (CMEs) to affect radio-wave propagation on the earth? コロナ質量放出からの帯電粒子が地球の無線電波の 伝わり方に影響を与えるのにどれくらい掛かるか？ A. Almost instantaneously B. About 5 minutes C. About 8 minutes D. 20 to 40 hours 　　　２０〜４０時間。 G3A16 (A) What might result during periods of high geomagnetic activity? 高地磁気活動の期間に起きるものは？ A. A visible aurora 　　　可視オーロラ。 B. Excellent high-frequency radio conditions C. Poor 6-meter conditions D. F-layer absorption G3B Maximum usable frequency; propagation "hops" G3B01 (B) If the maximum usable frequency (MUF) on the path from Minnesota to France is 24 MHz, which band should offer the best chance for a successful contact? ミネソタからフランスへの電波経路の最高使用可能周波数が２４ＭＨｚの時、 どの周波数帯での交信成功率が最も高いか？ A. 10 meters B. 15 meters C. 20 meters D. 40 meters G3B02 (C) If the maximum usable frequency (MUF) on the path from Ohio to Germany is 17 MHz, which band should offer the best chance for a successful contact? オハイオからドイツへの電波経路の最高使用可能周波数が１７ＭＨｚの時、 どの周波数帯での交信成功率が最も高いか？ A. 80 meters B. 40 meters C. 20 meters D. 2 meters G3B03 (C) If the HF radio-wave propagation (skip) is generally good on the 24-MHz and 28-MHz bands for several days, when might you expect a similar condition to occur? ２４ＭＨｚと２８ＭＨｚ帯で数日間ＨＦ無線電波が良く伝わった時、似たような コンディションが期待できるのはいつか？ A. 7 days later B. 14 days later C. 28 days later 　　　２８日後。 D. 90 days later G3B04 (A) What is one way to determine if the maximum usable frequency (MUF) is high enough to support 28-MHz propagation between your station and western Europe? 西ヨーロッパまで２８ＭＨｚの伝播が届くかどうかを知るためには？ A. Listen for signals on a 10-meter beacon frequency 　　　１０ｍのビーコン周波数の信号が聞こえるかどうか捜す。 B. Listen for signals on a 20-meter beacon frequency C. Listen for signals on a 39-meter broadcast frequency D. Listen for WWVH time signals on 20 MHz G3B05 (A) What usually happens to radio waves with frequencies below the maximum usable frequency (MUF) when they are sent into the ionosphere? 最高使用可能周波数以下の無線電波が電離層に向けて送られたら通常どうなる？ A. They are bent back to the earth 　　　曲げられて地表に戻って来る。 B. They pass through the ionosphere C. They are completely absorbed by the ionosphere D. They are bent and trapped in the ionosphere to circle the Earth G3B06 (C) Where would you tune to hear beacons that would help you determine propagation conditions on the 20-meter band? ２０ｍ帯の伝播状況を知るために聞くビーコンに合わせる周波数は？ A. 28.2 MHz B. 21.1 MHz C. 14.1 MHz D. 18.1 MHz G3B07 (D) During periods of low solar activity, which frequencies are the least reliable for long-distance communication? 太陽活動が低い時、遠距離通信に向かない周波数は？ A. Frequencies below 3.5 MHz B. Frequencies near 3.5 MHz C. Frequencies on or above 10 MHz D. Frequencies above 20 MHz 　　　２０ＭＨｚ以上の周波数。 G3B08 (D) At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours? 太陽周期のどの時点で昼間２０ｍ帯でワールドワイドに電波が伝わるか？ A. At the summer solstice B. Only at the maximum point of the solar cycle C. Only at the minimum point of the solar cycle D. At any point in the solar cycle 　　　太陽周期のいずれの時点でも。 G3B09 (C) What is the maximum distance along the Earth's surface that is normally covered in one hop using the F2 region? Ｆ２領域を使った１回の反射で伝わる地表面に沿った最大距離は？ A. 180 miles B. 1200 miles C. 2500 miles 　　２５００マイル。 D. None; the F2 region does not support radio-wave propagation G3B10 (B) What is the maximum distance along the Earth's surface that is normally covered in one hop using the E region? Ｅ領域を使った１回の反射で伝わる地表面に沿った最大距離は？ A. 180 miles B. 1200 miles 　　　１２００マイル。 C. 2500 miles D. None of these choices is correct G3B11 (A) What happens to HF propagation when the lowest usable frequency (LUF) exceeds the maximum usable frequency (MUF)? 最低使用可能周波数が最大使用可能周波数より大きくなったら、ＨＦ伝播はどうなるか？ A. No HF radio frequency will support communications along an ionospheric signal path 　　　電離層信号経路に沿った通信を維持するＨＦ無線周波数が無くなる。 B. The lowest usable frequency can never exceed the maximum usable frequency C. The ionospheric absorption of HF radio signals increases by 3 dB along every signal path D. All ionospheric propagation paths are still usable, but the signal-to-noise ratio decreases G3B12 (D) What factors affect the maximum usable frequency (MUF)? 最大使用可能周波数に影響する要因は？ A. Path distance and locations 　　　経路距離と位置。 B. Time of day and season 　　　季節と時刻。 C. Solar radiation and ionospheric disturbances 　　　太陽放射と電離層の乱れ。 D. All of these choices are correct 　　　全て正しい。 G3B13 (D) How might a skywave signal sound if it arrives at your receiver by both short path and long path propagation? 上空波信号が、短経路、及び、長経路伝播によって受信機に届くと、どのように聞こえるか？ A. Periodic fading every 10 seconds B. Signal strength increased by 3 dB C. Signal strength decreased by 3 dB D. A well-defined echo can be heard 　　　はっきりとしたエコーが聞こえる。 G3B14 (A) A short distance hop on 10 meters might indicate what conditions on 6 meters? １０ｍの短距離ホップは、６ｍのどんなコンディションを暗示するか？ A. The MUF exceeds 50 MHz 　　　ＭＦＵが５０ＭＨｚを超えている。 B. Absolutely no chance of a skywave 6-meter band opening C. 6-meter ground waves will diminish D. 10-meter propagation has no bearing on possible 6-meter propagation G3C Height of ionospheric regions; critical angle and frequency; HF scatter G3C01 (B) What is the average height of maximum ionization of the E region? Ｅ領域で最も電離している層の平均高度は？ A. 45 miles B. 70 miles 　　　７０マイル。 C. 200 miles D. 1200 miles G3C02 (A) When can the F2 region be expected to reach its maximum height at your location? Ｆ２領域が最大高度に達する時期は？ A. At noon during the summer 　　　夏の正午。 B. At midnight during the summer C. At dusk in the spring and fall D. At noon during the winter G3C03 (C) Why is the F2 region mainly responsible for the longest-distance radio-wave propagation? 遠距離無線電波伝播の主要な原因がＦ２領域である理由は？ A. Because it exists only at night B. Because it is the lowest ionospheric region C. Because it is the highest ionospheric region 　　　最も高い所に在る電離層だから。 D. Because it does not absorb radio waves as much as other ionospheric regions G3C04 (D) What is the "critical angle" as used in radio-wave propagation? 無線電波の伝わり方で用いられる臨界角度とは何か？ A. The lowest takeoff angle that will return a radio wave to the earth under specific ionospheric conditions B. The compass direction of a distant station C. The compass direction opposite that of a distant station D. The highest takeoff angle that will return a radio wave to the earth under specific ionospheric conditions 　　　その時の電離層コンディションによって無線電波が地表へ戻って来る最大打ち上げ角。 G3C05 (C) What is the main reason the 160-, 80- and 40-meter amateur bands tend to be useful only for short-distance communications during daylight hours? １６０ｍ、８０ｍ、４０ｍアマチュア帯が昼間の近距離通信にしか使えない主要な理由は？ A. Because of a lack of activity B. Because of auroral propagation C. Because of D-region absorption 　　　Ｄ領域による吸収。 D. Because of magnetic flux G3C06 (B) What is a characteristic of HF scatter signals? ＨＦ散乱信号の特徴は？ A. High intelligibility B. A wavering sound 　　　揺れ動く音。 C. Reversed modulation D. Reversed sidebands G3C07 (D) What makes HF scatter signals often sound distorted? ＨＦ散乱信号を歪んで聞こえさせる原因は？ A. Auroral activity and changes in the earth's magnetic field B. Propagation through ground waves that absorb much of the signal C. The state of the E-region at the point of refraction D. Energy scattered into the skip zone through several radio-wave paths 　　　不感地帯に複数の無線電波経路より電波エネルギーが散乱されるから。 G3C08 (A) Why are HF scatter signals usually weak? ＨＦ散乱信号が通常弱いのは何故か？ A. A part of the signal energy is propagated into the skip zone 　　　信号エネルギーの一部しか不感地帯へ伝播されないから。 B. Auroral activity absorbs most of the signal energy C. Propagation through ground waves absorbs most of the signal energy D. The F region of the ionosphere absorbs most of the signal energy G3C09 (B) What type of radio-wave propagation allows a signal to be detected at a distance too far for ground-wave propagation but too near for normal sky-wave propagation? 地表波にしては遠すぎ、通常の電離層反射では近すぎる距離で信号が 受信出来るのは、どの無線電波伝播によるか？ A. Ground wave B. Scatter 　　　散乱。 C. Sporadic-E skip D. Short-path skip G3C10 (D) When does scatter propagation on the HF bands most often occur? ＨＦ帯で散乱伝播が最もよく起きるのはいつか？ A. When the sunspot cycle is at a minimum and D-region absorption is high B. At night C. When the F1 and F2 regions are combined D. When communicating on frequencies above the maximum usable frequency (MUF) 　　　最大使用可能周波数より上の周波数で通信を行っている時。 G3C11 (A) Which is true about ionospheric absorption near the maximum usable frequency (MUF)? 最大使用可能周波数近傍での電離層吸収に関して正しいのは？ A. Absorption will be minimum 　　　吸収は最小。 B. Absorption is independent of frequency C. Absorption approaches maximum D. There is no correlation between MUF and absorption G3C12 (D) Daylight fading on the 40-meter band is associated most with which ionospheric layer? ４０ｍ帯で、日中の減衰に最も関係の在る電離層は？ A. The F2 layer B. The F1 layer C. The E layer D. The D layer 　　　Ｄ層。 SUBELEMENT G4 -- AMATEUR RADIO PRACTICES [5 Exam Questions -- 5 Groups] G4A Two-tone test; electronic TR switch; amplifier neutralization G4A01 (C) What kind of input signal is used to test the amplitude linearity of a single-sideband phone transmitter while viewing the output on an oscilloscope? オシロスコープへの出力を見ながらＳＳＢ音声送信器の増幅線形性を調べる為に使う入力信号は？ A. Normal speech B. An audio-frequency sine wave C. Two audio-frequency sine waves 　　　音声周波数の正弦波２つ。 D. An audio-frequency square wave G4A02 (C) When testing the amplitude linearity of a single-sideband transmitter, what kind of audio tones are fed into the microphone input and on what kind of instrument is the transmitter output observed? ＳＳＢ送信機の増幅線形性を調べる時、どんな種類の音声トーンを入力し、 どんな機器で送信機の出力を観察するか？ A. Two harmonically related tones are fed in, and the output is observed on an oscilloscope B. Two harmonically related tones are fed in, and the output is observed on a distortion analyzer C. Two non-harmonically related tones are fed in, and the output is observed on an oscilloscope 　　　倍音でない２つのトーンを入力し、出力をオシロスコープで見る。 D. Two non-harmonically related tones are fed in, and the output is observed on a distortion analyzer G4A03 (D) What audio frequencies are used in a two-tone test of the linearity of a single-sideband phone transmitter? ２トーンでＳＳＢ音声送信機の線形性をテストする時に使われる音声周波数は？ A. 20 Hz and 20 kHz tones must be used B. 1200 Hz and 2400 Hz tones must be used C. Any two audio tones may be used, but they must be within the transmitter audio passband, and must be harmonically related D. Any two audio tones may be used, but they must be within the transmitter audio passband, and should not be harmonically related 　　　どのような音声トーン２つで良いが、送信機の音声パスバンド内に入っており、倍音でない事。 G4A04 (A) At what point in an HF transceiver block diagram would an electronic TR switch normally appear? ＨＦ送信機のブロック図の通常どこに電子ＴＲスイッチが入るか？ A. Between the transmitter and low-pass filter 　　　送信機とローパスフィルターの間。 B. Between the low-pass filter and antenna C. At the antenna feed point D. At the power supply feed point G4A05 (C) Why is an electronic TR switch preferable to a mechanical one? 電子ＴＲスイッチが機械式より優れている点は？ A. It allows greater receiver sensitivity B. Its circuitry is simpler C. It has a higher operating speed 　　　作動スピードが速い。 D. It allows cleaner output signals G4A06 (A) As a power amplifier is tuned, what reading on its grid-current meter indicates the best neutralization? パワーアンの調整時、最もニュートラルになった時のグリッド 電流メーターの読みはどうなるか？ A. A minimum change in grid current as the output circuit is changed 　　　出力回路が変化しても、グリッド電流の変化が最小。 B. A maximum change in grid current as the output circuit is changed C. Minimum grid current D. Maximum grid current G4A07 (D) Why is neutralization necessary for some vacuum-tube amplifiers? 真空管アンプによってはニュートラルにする必要があるのは何故か？ A. To reduce the limits of loaded Q B. To reduce grid-to-cathode leakage C. To cancel AC hum from the filament transformer D. To cancel oscillation caused by the effects of interelectrode capacitance 　　　電極間の静電容量による振動を無くす為。 G4A08 (C) In a properly neutralized RF amplifier, what type of feedback is used? 適切にニュートラルにされたＲＦアンプで使われているフィードバックは？ A. 5% B. 10% C. Negative 　　　ネガティブ。 D. Positive G4A09 (B) What does a neutralizing circuit do in an RF amplifier? ＲＦアンプのニュートラル回路は何をするか？ A. It controls differential gain B. It cancels the effects of positive feedback 　　　ポジティブフィードバックをキャンセルする。 C. It eliminates AC hum from the power supply D. It reduces incidental grid modulation G4A10 (B) What is the reason for neutralizing the final amplifier stage of a transmitter? 送信機の最終アンプ段をニュートラルにするのは何故か？ A. To limit the modulation index B. To eliminate self oscillations 　　　自己振動を無くす為。 C. To cut off the final amplifier during standby periods D. To keep the carrier on frequency G4A11 (A) What type of transmitter performance does a two-tone test analyze? ２トーンテストで調べる送信機の性能は？ A. Linearity 　　　線形性。 B. Carrier and undesired sideband suppression C. Percentage of frequency modulation D. Percentage of carrier phase shift G4A12 (B) What type of signals are used to conduct a two-tone test? ２トーンテストに使われる信号の種類は？ A. Two audio signals of the same frequency, but shifted 90-degrees and are within the transmitter's modulation bandpass B. Two non-harmonically related audio signals that are within the modulation bandpass of a transmitter 　　　送信機の変調バンド幅内に入っている、倍音でない２つの音声信号。 C. Any two audio frequency signals as long as they are within the transmitter's modulation bandpass D. Two audio frequency range square wave signals of equal amplitude that are within the transmitter's modulation bandpass G4A13 (D) In what way is a diode like a switch? ダイオードがスイッチに似ている点は？ A. It permits current flow at bias voltages less than its zener voltage and blocks current at bias voltages greater than its zener voltage B. It permits current flow when reverse biased and blocks current when forward biased C. The voltage drop across it increases as forward bias increases and decreases as reverse bias decreases D. It permits current flow when forward biased and blocks current when reverse biased 　　　順バイアス時に円流を流し、逆バイアス時に電流を遮断する。 G4B Test equipment: oscilloscope; signal tracer; antenna noise bridge; monitoring oscilloscope; field-strength meters G4B01 (D) What item of test equipment contains horizontal- and vertical-channel amplifiers? 水平、垂直チャンネルアンプを備えたテスト装置は？ A. An ohmmeter B. A signal generator C. An ammeter D. An oscilloscope 　　　オシロスコープ。 G4B02 (D) What is a digital oscilloscope? デジタルオシロスコープとは？ A. An oscilloscope used only for signal tracing in digital circuits B. An oscilloscope used only for troubleshooting computers C. An oscilloscope used only for troubleshooting switching power supply circuits D. An oscilloscope designed around digital technology rather than analog technology 　　　アナログではなくデジタル技術で設計されたオシロスコープ。 G4B03 (D) How would a signal tracer normally be used? シグナルトレーサーの使われ方は？ A. To identify the source of radio transmissions B. To make exact drawings of signal waveforms C. To show standing wave patterns on open-wire feed-lines D. To identify an inoperative stage in a receiver 　　　受信機の破損段を見つける為。 G4B04 (C) How is a noise bridge normally used? ノイズブリッジは、どのように使うか？ A. It is connected at an antenna's feed point and reads the antenna's noise figure B. It is connected between a transmitter and an antenna and is tuned for minimum SWR C. It is connected between a receiver and an antenna of unknown impedance and is tuned for minimum noise 　　　受信機とインピーダンスが分かっていないアンテナに間に接続して、 　　　ノイズが最低となるように調整する。 D. It is connected between an antenna and ground and is tuned for minimum SWR G4B05 (A) What is the best instrument to use to check the signal quality of a CW or single-sideband phone transmitter? ＣＷやＳＳＢ音声送信機の信号の質を検査する為に使われる最も良い装置は？ A. A monitoring oscilloscope 　　　モニターオシロスコープ。 B. A field-strength meter C. A sidetone monitor D. A signal tracer and an audio amplifier G4B06 (D) What signal source is connected to the vertical input of a monitoring oscilloscope when checking the quality of a transmitted signal? 送信信号の質を検査する為に、モニターオシロスコープの垂直入力には、どの信号源をつなぐか？ A. The IF output of a monitoring receiver B. The audio input of the transmitter C. The RF signals of a nearby receiving antenna D. The RF output of the transmitter 　　　送信機のＲＦ出力。 G4B07 (C) What is the purpose of a field-strength meter? 電界強度系の目的は？ A. To determine the standing-wave ratio on a transmission line B. To check the output modulation of a transmitter C. To monitor relative RF output 　　　相対ＲＦ出力を測る為。 D. To increase average transmitter output G4B08 (A) What simple instrument may be used to monitor relative RF output during antenna and transmitter adjustments? アンテナと送信機の調整時に相対ＲＦ出力を測る為に用いる装置は？ A. A field-strength meter 　　　電界強度計。 B. An antenna noise bridge C. A multimeter D. A metronome G4B09 (C) In order to raise the S-meter reading on a receiver from S8 to S9, how much must the power output of a transmitter be increased? 受信機のＳメーターをＳ８からＳ９に上げるには、送信機の出力をどのくらい上げれば良いか？ A. Approximately 2 times B. Approximately 3 times C. Approximately 4 times 　　　おおよそ４倍。 D. Approximately 5 times G4B10 (B) What type of information does a field strength meter provide? 電界強度計で測れるものは？ A. The gain in dBi of an antenna B. The field pattern of an antenna 　　　アンテナの電界パターン。 C. The presence and amount of phase distortion of a transmitter D. The presence and amount of amplitude distortion of a transmitter G4B11 (A) For which of the following applications might you use a field strength meter? 電界強度計を使う応用は？ A. Close-in RDF work 　　　接近ＲＤＦ作業。 B. A modulation monitor for a frequency or phase modulation transmitter C. An overmodulation indicator for a SSB transmitter D. A keying indicator for a RTTY or packet transmitter G4B12 (B) What is one way a noise bridge might be used? ノイズブリッジを使う例は？ A. Determining an antenna's gain in dBi B. Pre-tuning an antenna tuner 　　　アンテナチューナーの同調。 C. Determining the directivity of an antenna D. Determining the line loss of the antenna system G4B13 (A) What information could a noise bridge directly provide about an unknown length and type of transmission line? 長さと種類の分からない給電線に関してノイズブリッジで直接分かる事は？ A. Its characteristic impedance 　　　特性インピーダンス。 B. Its velocity factor C. Its loss in dB per 100-feet D. Its reflection coefficient G4B14 (B) How would you connect an oscilloscope to an AM or SSB transmitter to check transmitter modulation using double trapezoidal patterns? 送信機の変調を２重台形パターンを使って調べる為に、オシロスコープはＡＭや ＳＳＢ送信機にどう繋ぐか？ A. Couple the detected RF output signal to the vertical plates; set the internal sweep to twice the modulating frequency B. Couple the RF output signal to the vertical plates and external trigger; set the internal sweep to twice the modulating frequency 　　　ＲＦ出力信号を垂直プレートと外部トリガーに繋ぐ；内部スイープを変調周波数の２倍に合わせる。 C. Couple the RF output signal to the vertical plates; apply the unmodulated RF drive signal to the horizontal plates D. Couple the detected RF output signal to the vertical plates; apply a constant DC signal to the horizontal plates G4C Audio rectification in consumer electronics; RF ground G4C01 (B) What devices would you install in home-entertainment systems to reduce or eliminate audio-frequency interference? ホームエンターティメントシステムへの音声周波数混信を除去する為に付加する装置は？ A. Bypass inductors B. Bypass capacitors 　　　バイパスコンデンサー。 C. Metal-oxide varistors D. Bypass resistors G4C02 (B) What should be done if a properly operating amateur station is the cause of interference to a nearby telephone? 正しく運用されているアマチュア局が隣接する電話に混信を起こす時何をするか？ A. Make internal adjustments to the telephone equipment B. Install RFI filters at the affected telephone 　　　影響を受けている電話にＲＦＩフィルターを付ける。 C. Stop transmitting whenever the telephone is in use D. Ground and shield the local telephone distribution amplifier G4C03 (C) What sound is heard from a public-address system if audio rectification of a nearby single-sideband phone transmission occurs? 公共防災放送に隣接したＳＳＢ音声送信機からの混変調が起きたら、何が聞こえるか？ A. A steady hum whenever the transmitter's carrier is on the air B. On-and-off humming or clicking C. Distorted speech from the transmitter's signals 　　　送信機の信号による歪んだ音声。 D. Clearly audible speech from the transmitter's signals G4C04 (A) What sound is heard from a public-address system if audio rectification of a nearby CW transmission occurs? 公共防災放送に隣接したＣＷ送信機からの混変調が起きたら、何が聞こえるか？ A. On-and-off humming or clicking 　　　断続したハム若しくはカチカチ音。 B. Audible, possibly distorted speech C. Muffled, severely distorted speech D. A steady whistling G4C05 (D) If your third-floor amateur station has a ground wire running 33 feet down to a ground rod, why might you get an RF burn if you touch the front panel of your HF transceiver? ３階にあるアマチュア局のアース線がアース棒まで３３フィートある時、ＨＦ送信機の フロントパネルに触るとＲＦ火傷をする理由は？ A. Because the ground rod is not making good contact with moist earth B. Because the transceiver's heat-sensing circuit is not working to start the cooling fan C. Because of a bad antenna connection, allowing the RF energy to take an easier path out of the transceiver through you D. Because the ground wire is a resonant length on several HF bands and acts more like an antenna than an RF ground connection 　　　アース線の長さがＨＦ帯の共振長さになり、アースというよりアンテナになっている。 G4C06 (A) Which of the following is NOT an important reason to have a good station ground? アースを良く取る理由でないものは？ A. To reduce the cost of operating a station 　　　局を運用する経費を削減する。 B. To reduce electrical noise C. To reduce interference D. To reduce the possibility of electric shock G4C07 (A) What is one good way to avoid stray RF energy in your amateur station? アマチュア局で迷走ＲＦエネルギーを無くす良い方法は？ A. Keep the station's ground wire as short as possible 　　　アース線を出来る限り短くする。 B. Use a beryllium ground wire for best conductivity C. Drive the ground rod at least 14 feet into the ground D. Make a couple of loops in the ground wire where it connects to your station G4C08 (B) Which of the following statements about station grounding is NOT true? アース線に関して正しくないのは？ A. Braid from RG-213 coaxial cable makes a good conductor to tie station equipment together into a station ground B. Only transceivers and power amplifiers need to be tied into a station ground 　　　送信機とパワーアンプのみアースに繋げば良い。 C. According to the National Electrical Code, there should be only one grounding system in a building D. The minimum length for a good ground rod is 8 feet G4C09 (C) Which of the following statements about station grounding is true? アースに関して正しいのは？ A. The chassis of each piece of station equipment should be tied together with high-impedance conductors B. If the chassis of all station equipment is connected with a good conductor, there is no need to tie them to an earth ground C. RF hot spots can occur in a station located above the ground floor if the equipment is grounded by a long ground wire 　　　２階以上に在る局は、装置のアース線が長い場合、ＲＨホットスポットが発生する事が在る。 D. A ground loop is an effective way to ground station equipment G4C10 (D) Which of the following is NOT covered in the National Electrical Code? 米国電気規則に網羅されていないものは？ A. Minimum conductor sizes for different lengths of amateur antennas B. The size and composition of grounding conductors C. Electrical safety inside the ham shack D. The RF exposure limits of the human body 　　　人体のＲＦ被爆限量。 G4C11 (A) What can cause the unintended rectification of an RF signal? ＲＦ信号の意図しない整流を引き起こすものは？ A. Induced currents in conductors that are in poor electrical contact 　　　電気接触の悪い導体に引き起こされる電流。 B. Induced voltages in conductors that are in good electrical contact C. Capacitive coupling of the RF signal to ground D. Excessive standing wave ratio (SWR) of the transmission line system G4C12 (C) What is one cause of severe, broadband radio frequency noise at an amateur radio station? アマチュア無線局でひどい、広域無線周波数ノイズを起こすものは？ A. Not using a balun or line isolator to feed balanced antennas B. Lack of rectification of the transmitter's signal in power conductors C. An intermittent RF ground 　　　間歇的なＲＦアース。 D. The use of horizontal, rather than vertical antennas G4C13 (D) How can a ground loop be avoided? アースループを無くすには？ A. Series connect ("daisy chain") all ground conductors B. Connect the AC neutral conductor to the ground wire C. Avoid using lockwashers and star washers in making ground connections D. Connect all ground conductors to a single point 　　　全てのアース導体を一点に繋ぐ。 G4D Speech processors; PEP calculations; wire sizes and fuses G4D01 (D) What is the reason for using a properly adjusted speech processor with a single-sideband phone transmitter? ＳＳＢ音声送信機で正しく調整されたスピーチプロセッサーを使う理由は？ A. It reduces average transmitter power requirements B. It reduces unwanted noise pickup from the microphone C. It improves voice-frequency fidelity D. It improves signal intelligibility at the receiver 　　　受信側の信号聞き取り易さを良くする。 G4D02 (B) If a single-sideband phone transmitter is 100% modulated, what will a speech processor do to the transmitter's power? ＳＳＢ音声送信機が１００％変調されている時、スピーチプロセッサーは 送信出力に何をするか？ A. It will increase the output PEP B. It will add nothing to the output PEP 　　　出力ＰＥＰに何も加えない。 C. It will decrease the peak power output D. It will decrease the average power output G4D03 (A) What is the output PEP from a transmitter if an oscilloscope measures 200 volts peak-to-peak across a 50-ohm resistor connected to the transmitter output? オシロスコープで測った送信機出力に繋がった５０Ωの抵抗にかかる電圧が ピークからピークまで２００Ｖである時、送信機からの出力ＰＥＰはいくらか？ A. 100 watts B. 200 watts C. 400 watts D. 1000 watts G4D04 (B) What is the output PEP from a transmitter if an oscilloscope measures 500 volts peak-to-peak across a 50-ohm resistor connected to the transmitter output? オシロスコープで測った送信機出力に繋がった５０Ωの抵抗にかかる電圧が ピークからピークまで５００Ｖである時、送信機からの出力ＰＥＰはいくらか？ A. 500 watts B. 625 watts C. 1250 watts D. 2500 watts G4D05 (B) What is the output PEP of an unmodulated carrier transmitter if an average-reading wattmeter connected to the transmitter output indicates 1060 watts? 送信機出力につながった平均電力計が１０６０Ｗを指す時、 変調されていない送信出力のＰＥＰはいくらか？ A. 530 watts B. 1060 watts C. 1500 watts D. 2120 watts G4D06 (A) Which wires in a four-conductor line cord should be attached to fuses in a 240-VAC primary (single phase) power supply? ４極コードの内どれを２４０ＶＡＣ１次（単相）電源のフューズにつなげるか？ A. Only the "hot" (black and red) wires 　　　活（黒と赤）線のみ。 B. Only the "neutral" (white) wire C. Only the ground (bare) wire D. All wires G4D07 (D) What size wire is normally used on a 20-ampere, 120-VAC household appliance circuit? 家庭用１２０ＶＡＣ２０Ａ照明回路に通常使われる電線のサイズは？ A. AWG number 20 B. AWG number 16 C. AWG number 14 D. AWG number 12 　　　ＡＷＧ１２号。 G4D08 (D) What maximum size fuse or circuit breaker should be used in a household appliance circuit using AWG number 12 wiring? ＳＷＧ１２番電線を使った家庭電化製品で使われるフューズやブレーカーの最大サイズは？ A. 100 amperes B. 60 amperes C. 30 amperes D. 20 amperes 　　　２０Ａ。 G4D09 (C) What operating benefit does properly adjusted speech clipping provide? 正しく調整されたスピーチクリッパーの運用上の効用とは？ A. It removes any distortion in the audio waveform B. Deep clipping restores the natural sound of the audio C. It prevents overdriving the transmitter's modulator stage 　　　送信機の変調段の過剰負荷を防ぐ。 D. It removes any AC hum and noise that might be in the audio G4D10 (C) What would be the voltage across a 50-ohm dummy load dissipating 1200 watts? １２００Ｗを消費している５０Ωのダミーロードの両端の電圧は？ A. 173 volts B. 245 volts C. 346 volts D. 692 volts G4E Common connectors used in amateur stations: types; when to use; fastening methods; precautions when using; HF mobile radio installations; emergency power systems; generators; battery storage devices and charging sources including solar; wind generation G4E01 (B) Which of the following connectors is NOT designed for RF transmission lines? ＲＦ通信ケーブル用に設計されていないコネクターはどれか？ A. PL-259 B. DB-25 C. Type N D. BNC G4E02 (D) When installing a power plug on a line cord, which of the following should you do? 電源コードに電源プラグをつける時、どうするか？ A. Twist the wire strands neatly and fasten them so they don't cause a short circuit 　　　コードの撚り線をきれいに撚ってショートしないように結ぶ。 B. Observe the correct wire color conventions for plug terminals 　　　コードの色は一般の慣習を守る。 C. Use proper grounding techniques 　　　正しいアースを取る。 D. All of these choices 　　　全て正しい。 G4E03 (A) Which of the following power connections would be the best for a 100-watt HF mobile installation? １００ＷのＨＦモービル設置に最も良い電源接続は？ A. A direct, fused connection to the battery using heavy gauge wire 　　　高耐圧のゲージワイヤを使ってフューズで直接繋ぐ。 B. A connection to the fuse-protected accessory terminal strip or distribution panel C. A connection to the cigarette lighter D. A direct connection to the alternator or generator G4E04 (B) Why is it best NOT to draw the DC power for a 100-watt HF transceiver from an automobile's cigarette lighter socket? １００ＷのＨＦ送信機のＤＣ電源を車のシガーソケットから取らない方が良い訳は？ A. The socket is not wired with an RF-shielded power cable B. The socket's wiring may not be adequate for the current being drawn by the transceiver 　　　送信機に使われる電流に対してソケットの電線が不十分である事が在る。 C. The DC polarity of the socket is reversed from the polarity of modern HF transceivers D. The power from the socket is never adequately filtered for HF transceiver operation G4E05 (C) Which of the following most limits the effectiveness of an HF mobile transceiver operating in the 75-meter band? ７５ｃｍ帯のＨＦモービル送信機の効率を最も制限するのは？ A. The vehicle's electrical system wiring B. The wire gauge of the DC power line to the transceiver C. The HF mobile antenna system 　　　ＨＦモービルアンテナ。 D. The rating of the vehicle's alternator or generator G4E06 (D) Which of the following is true of both a permanent or temporary emergency generator installation? 常置、非常電源設備に関し正しいことは？ A. The generator should be located in a well ventilated area 　　　換気の良い場所に据え付ける。 B. The installation should be grounded 　　　アースを取る。 C. Extra fuel supplies, especially gasoline, should not be stored in an inhabited area 　　　人の居住区に燃料、特にガソリンを保管しない。 D. All of these choices 　　　全て正しい。 G4E07 (C) Which of the following is true of a lead-acid storage battery as it is being charged? 充電中の鉛蓄電池に関し正しい事は？ A. It tends to cool off B. It gives off explosive oxygen gas C. It gives off explosive hydrogen gas 　　　爆発性の水素ガスを発生する。 D. It takes in oxygen from the surrounding air G4E08 (A) What is the name of the process by which sunlight is directly changed into electricity? 太陽光が直接電気に変わる過程の事を何と言うか？ A. Photovoltaic conversion 　　　光電変換。 B. Photosensitive conduction C. Photosynthesis D. Photocoupling G4E09 (B) What is the approximate open-circuit voltage from a modern, well illuminated photovoltaic cell? 光を良く照射された最近の光電セルの開回路電圧は？ A. 0.02 VDC B. 0.5 VDC C. 0.2 VDC D. 1.38 VDC G4E10 (A) What determines the proper size solar panel to use in a solar-powered battery-charging circuit? 太陽光充電回路に使う太陽電池パネルの大きさをどう決めるか？ A. The panel's voltage rating and maximum output current 　　　パネルの定格電圧と最大出力電流。 B. The amount of voltage available per square inch of panel C. The panel's open-circuit current D. The panel's short-circuit voltage G4E11 (C) What is the biggest disadvantage to using wind power as the primary source of power for an emergency station? 非常局の１次電源に風力を使用する最大の問題点は？ A. The conversion efficiency from mechanical energy to electrical energy is less that 2 percent B. The voltage and current ratings of such systems are not compatible with amateur equipment C. A large electrical storage system is needed to supply power when the wind is not blowing 　　　風が吹いていない時に、電力を供給する巨大な電気貯蔵システムが要る。 D. All of these choices are correct G4E12 (A) What type of coaxial connector would be a good choice to use for 10 GHz feed-line connections? １０ＧＨｚの給電線連結部に適したコネクターは？ A. Type N B. Type BNC C. Type UHF D. Type F G4E13 (A) Where should you avoid placing a gasoline-fueled generator to power your station? 局に電気を起こす為のガソリン燃料の発電機の設置を避けるべき場所は？ A. Inside a building or outside an open window 　　　建物の中、又は、開いた窓の外。 B. Close to cold water pipes or other grounded metal objects C. Close to a driven ground D. Downwind from your station G4E14 (D) What safety precaution should you observe when using a gasoline-fueled generator to power your home station? 常置局に電気を起こす為のガソリン燃料発電機を使う時、守るべき安全注意は？ A. Always ground the frame of the generator 　　　発電機のフレームをアースする。 B. Use only generators that produce a clean sine wave output 　　　綺麗な正弦波出力を発生する発電機のみ使う。 C. Make sure that the engine is well lubricated 　　　エンジンの潤滑油を確認する。 D. All of these choices are correct 　　　全て正しい。 G4E15 (D) During a commercial power outage, why would it be unwise to back feed the output of a gasoline generator into your house wiring by connecting the generator through an AC wall outlet? 商用電気の停電時、ガソリン発電機を壁のＡＣコンセントに繋いで、発電機の出力を家の配線に給電する事が良くない訳は？ A. It presents a hazard for electric company workers 　　　電気会社の作業員が危険になる。 B. You may draw too much current, overloading your generator 　　　過剰な電流を使って、発電機に過剰不可を掛けるかもしれない。 C. Power may be restored to your house, damaging your generator 　　　電気が復旧して発電機を破損するかもしれない。 D. All of these choices are correct 　　　全て正しい。 SUBELEMENT G5 -- ELECTRICAL PRINCIPLES [2 Exam Questions -- 2 Groups] G5A Impedance, including matching; resistance, including ohm; reactance; inductance; capacitance; and metric divisions of these values G5A01 (C) What is impedance? インピーダンスとは？ A. The electric charge stored by a capacitor B. The opposition to the flow of AC in a circuit containing only capacitance C. The opposition to the flow of AC in a circuit 　　　回路のＡＣ電流に対する抵抗。 D. The force of repulsion between one electric field and another with the same charge G5A02 (B) What is reactance? リアクタンスとは？ A. Opposition to DC caused by resistors B. Opposition to AC caused by inductors and capacitors 　　　コイルやコンデンサーによるＡＣへの抵抗。 C. A property of ideal resistors in AC circuits D. A large spark produced at switch contacts when an inductor is de-energized G5A03 (D) In an inductor, what causes opposition to the flow of AC? コイルで、ＡＣ電流へ抵抗するものは？ A. Resistance B. Reluctance C. Admittance D. Reactance 　　　リアクタンス。 G5A04 (C) In a capacitor, what causes opposition to the flow of AC? コンデンサーで、ＡＣ電流へ抵抗するものは？ A. Resistance B. Reluctance C. Reactance 　　　リアクタンス。 D. Admittance G5A05 (D) How does a coil react to AC? コイルはＡＣにどう応答するか？ A. As the frequency of the applied AC increases, the reactance decreases B. As the amplitude of the applied AC increases, the reactance increases C. As the amplitude of the applied AC increases, the reactance decreases D. As the frequency of the applied AC increases, the reactance increases 　　　ＡＣの周波数が大きくなるとリアクタンスは大きくなる。 G5A06 (A) How does a capacitor react to AC? コンデンサーは、ＡＣにどう応答するか？ A. As the frequency of the applied AC increases, the reactance decreases 　　　ＡＣの周波数が小さくなると、リアクタンスは大きくなる。 B. As the frequency of the applied AC increases, the reactance increases C. As the amplitude of the applied AC increases, the reactance increases D. As the amplitude of the applied AC increases, the reactance decreases G5A07 (D) What happens when the impedance of an electrical load is equal to the internal impedance of the power source? 電気負荷のインピーダンスが電源の内部インピーダンスに等しいとどうなるか？ A. The source delivers minimum power to the load B. The electrical load is shorted C. No current can flow through the circuit D. The source delivers maximum power to the load 　　　電源は負荷に最大出力を送る。 G5A08 (A) Why is impedance matching important? インピーダンスマッチングが重要な訳は？ A. So the source can deliver maximum power to the load 　　　それによって電源が最大出力を負荷に送る事が出来る。 B. So the load will draw minimum power from the source C. To ensure that there is less resistance than reactance in the circuit D. To ensure that the resistance and reactance in the circuit are equal G5A09 (B) What unit is used to measure reactance? リアクタンスの単位は？ A. Mho B. Ohm 　　　オーム。 C. Ampere D. Siemens G5A10 (B) What unit is used to measure impedance? インピーダンスの単位は？ A. Volt B. Ohm 　　　オーム。 C. Ampere D. Watt G5A11 (A) Why should core saturation of a conventional impedance matching transformer be avoided? 従来型のインピーダンスマッチング変圧器の芯飽和を避ける理由は？ A. Harmonics and distortion could result from saturation 　　　飽和によって高調波や歪みが起こる。 B. Magnetic flux would increase with frequency C. RF susceptance would increase D. Temporary changes of the core permeability could result from saturation G5B Decibel; Ohm's Law; current and voltage dividers; electrical power calculations and series and parallel components; transformers (either voltage or impedance); sine wave root-mean-square (RMS) value G5B01 (B) A two-times increase in power results in a change of how many dB? 出力が２倍になるとｄＢはいくつ変わるか？ A. 1 dB higher B. 3 dB higher 　　　３ｄＢ高くなる。 C. 6 dB higher D. 12 dB higher G5B02 (B) In a parallel circuit with a voltage source and several branch resistors, how is the total current related to the current in the branch resistors? 電源と複数の抵抗が並列につながった回路で、全電流と抵抗に流れる電流の関係は？ A. It equals the average of the branch current through each resistor B. It equals the sum of the branch current through each resistor 　　　個々の抵抗に流れる電流の合計に等しい。 C. It decreases as more parallel resistors are added to the circuit D. It is the sum of each resistor's voltage drop multiplied by the total number of resistors G5B03 (B) How many watts of electrical power are used if 400 VDC is supplied to an 800-ohm load? ４００ＶＤＣが８００Ωの負荷に掛かると何Ｗの電力が消費されるか？ A. 0.5 watts B. 200 watts 　　　２００Ｗ。 C. 400 watts D. 320,000 watts G5B04 (D) How many watts of electrical power are used by a 12-VDC light bulb that draws 0.2 amperes? １２ＶＤＣの電球に０．２Ａの電流が流れると何Ｗの電力が消費されるか？ A. 60 watts B. 24 watts C. 6 watts D. 2.4 watts 　　　２．４Ｗ G5B05 (A) How many watts are being dissipated when 7.0 milliamperes flow through 1.25 kilohms? １．２５ＫΩに７．０ｍＡが流れると何Ｗの電力が消費されるか？ A. Approximately 61 milliwatts 　　　おおよそ６１ｍＷ。 B. Approximately 39 milliwatts C. Approximately 11 milliwatts D. Approximately 9 milliwatts G5B06 (C) What is the voltage across a 500-turn secondary winding in a transformer if the 2250-turn primary is connected to 120 VAC? 変圧器の２２５０巻きの１次側に１２０ＶＡＣが繋がれたら、 ５００巻きの２次側の電圧は？ A. 2370 volts B. 540 volts C. 26.7 volts 　　　２６．７Ｖ。 D. 5.9 volts G5B07 (A) What is the turns ratio of a transformer to match an audio amplifier having a 600-ohm output impedance to a speaker having a 4-ohm impedance? 出力インピーダンスが６００Ωの音声アンプとインピーダンスが４Ωの スピーカーをマッチさせる変圧器の巻線比は？ A. 12.2 to 1 　　　１２．２対１。 B. 24.4 to 1 C. 150 to 1 D. 300 to 1 G5B08 (B) A DC voltage equal to what value of an applied sine-wave AC voltage would produce the same amount of heat over time in a resistive element? 正弦波ＡＣ電圧が抵抗に発生させる熱量と同じ熱量を発生させるＤＣ電圧は？ A. The peak-to-peak value B. The RMS value 　　　ＲＭＳ値。 C. The average value D. The peak value G5B09 (D) What is the peak-to-peak voltage of a sine wave that has an RMS voltage of 120 volts? ＲＭＳ電圧が１２０Ｖの正弦波のピークからピークまでの電圧は？ A. 84.8 volts B. 169.7 volts C. 204.8 volts D. 339.4 volts 　　　３３９．４Ｖ。 G5B10 (B) A sine wave of 17 volts peak is equivalent to how many volts RMS? 正弦波のピークが１７Ｖである時、ＲＭＳ電圧は？ A. 8.5 volts B. 12 volts 　　　１２Ｖ。 C. 24 volts D. 34 volts G5B11 (A) What would be the RMS voltage if you combined two or more sine wave voltages? ２つ以上の正弦波電圧を組合わせた時のＲＭＳ電圧は？ A. The square root of the average of the sum of the squares of each voltage waveform 　　　個々の電圧波形の2乗の合計の平均の平方根。 B. The sum of the RMS values for each voltage waveform C. The sum of the average values for each waveform D. The square of the sum of the average value for each waveform G5B12 (C) What causes a voltage to appear across the secondary winding of a transformer when a voltage source is connected across its primary winding? 電圧源を変圧器の1次側につないだ時、2次側に電圧が発生する理由は？ A. Capacitive coupling B. Displacement current coupling C. Mutual inductance 　　　相互インダクタンス。 D. Mutual capacitance G5B13 (A) What would be the capacitance and voltage rating of a series circuit consisting of two equal value capacitors with equal voltage ratings? キャパシタンスと電圧定格が同じコンデンサーを２つ直列につないだ時のキャパシタンスと電圧定格は？ A. Total capacitance would be half that of each capacitor and maximum voltage would be twice that of each capacitor 　　　キャパシタンスは半分、最大電圧は2倍。 B. Total capacitance would be half that of each capacitor and maximum voltage would be the same as each capacitor C. Total capacitance and maximum voltage would be the same as each capacitor D. Total capacitance and maximum voltage would be half that of each capacitor G5B14 (D) What percentage loss would result from a transmission line loss of 1 dB? 給電線損失１ｄＢの損失率は？ A. 16.6% B. 12.5% C. 14.7% D. 20.6% 　　　２０．６％。 G5B15 (C) If three equal resistors in parallel produce 50-ohms of resistance and the same resistors in series produce 450-ohms, what is the value of each resistor? 3個の抵抗が、並列では５０Ω、直列では４５０Ωとなる時、1個の抵抗値は？ A. 1500-ohms B. 90-ohms C. 150-ohms D. 175-ohms SUBELEMENT G6 -- CIRCUIT COMPONENTS [1 exam question -- 1 group] G6A Resistors; capacitors; inductors; rectifiers and transistors; etc. G6A01 (C) If a carbon resistor's temperature is increased, what will happen to the resistance? 炭素抵抗の温度が上昇した時、抵抗値はどうなるか？ A. It will increase by 20% for every 10 degrees centigrade B. It will stay the same C. It will change depending on the resistor's temperature coefficient rating 　　　抵抗の温度係数に従って変化する。 D. It will become time dependent G6A02 (D) What type of capacitor is often used in power-supply circuits to filter the rectified AC? 整流されたＡＣを平滑する電源回路に使われるコンデンサーは？ A. Disc ceramic B. Vacuum variable C. Mica D. Electrolytic 　　　電解。 G6A03 (D) What function does a capacitor serve if it is used in a power-supply circuit to filter transient voltage spikes across the transformer's secondary winding? 電源回路で変圧器２次側の電圧スパイクを平滑にするコンデンサーの機能は？ A. Clipper capacitor B. Trimmer capacitor C. Feedback capacitor D. Suppressor capacitor 　　　抑制コンデンサー。 G6A04 (B) Where is the source of energy connected in a transformer? 変圧器のどこにエネルギー源を繋ぐか？ A. To the secondary winding B. To the primary winding 　　　１次側。 C. To the core D. To the plates G6A05 (A) If no load is attached to the secondary winding of a transformer, what is current in the primary winding called? 変圧器の２次側に負荷が無い時、１次側電流は何と呼ばれるか？ A. Magnetizing current 　　　磁化電流。 B. Direct current C. Excitation current D. Stabilizing current G6A06 (C) What is the peak-inverse-voltage rating of a power-supply rectifier? 電源整流回路のピーク逆電圧とは？ A. The maximum transient voltage the rectifier will handle in the conducting direction B. 1.4 times the AC frequency C. The maximum voltage the rectifier will handle in the non-conducting direction 　　　整流回路が電流の流れない方向に掛かっても耐えられる最大電圧。 D. 2.8 times the AC frequency G6A07 (A) What are the two major ratings that must not be exceeded for silicon-diode rectifiers used in power-supply circuits? 電源回路に使われるシリコンダイオード整流器の超えてはいけない２つの定格値は？ A. Peak inverse voltage; average forward current 　　　ピーク逆電圧、平均順流電流。 B. Average power; average voltage C. Capacitive reactance; avalanche voltage D. Peak load impedance; peak voltage G6A08 (A) What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load? 抵抗負荷につながれた全波整流器の出力波形は？ A. A series of pulses at twice the frequency of the AC input 　　　ＡＣ入力周波数の２倍の連続パルス。 B. A series of pulses at the same frequency as the AC input C. A sine wave at half the frequency of the AC input D. A steady DC voltage G6A09 (B) A half-wave rectifier conducts during how many degrees of each cycle? 半波整流器は、周期の何度の間電流を流すか？ A. 90 degrees B. 180 degrees 　　　１８０°。 C. 270 degrees D. 360 degrees G6A10 (D) A full-wave rectifier conducts during how many degrees of each cycle? 全波整流器は、周期の何度の間電流を流すか？ A. 90 degrees B. 180 degrees C. 270 degrees D. 360 degrees 　　　３６０°。 G6A11 (C) When two or more diodes are connected in parallel to increase the current-handling capacity of a power supply, what is the purpose of the resistor connected in series with each diode? 電源の電流容量を増やす為に複数のダイオードが並列につながれた時、 それぞれのダイオードに直列に繋がれた抵抗の役目は？ A. The resistors ensure the thermal stability of the power supply B. The resistors regulate the power supply output voltage C. The resistors ensure that one diode doesn't take most of the current 　　　１つのダイオードだけに殆どの電流が流れないようにする。 D. The resistors act as swamping resistors in the circuit G6A12 (B) Why would it not be a good idea to use a wire-wound resistor in a resonant circuit? 共振回路に巻線抵抗を使うのが良くないのは？ A. The resistor's tolerance value would not be adequate for such a circuit B. The resistor's inductance would detune the circuit 　　　抵抗のインダクタンスが回路の同調を乱す。 C. The resistor would overheat D. The resistor's internal capacitance would detune the circuit G6A13 (D) What is an advantage of ferrite toroidal inductors? 鉄芯インダクターの利点は？ A. Large values of inductance may be obtained 　　　インダクタンスを大きく出来る。 B. The inductor may be used in applications where core saturation is desirable 　　　芯飽和が必要な機器に使える。 C. Most of the magnetic field is contained in the core 　　　磁界の殆どが芯に閉じ込められる。 D. All of these choices are correct 　　　全て正しい。 G6A14 (A) Where would be the stable operating points for a bipolar transistor that is used as a switch in a logic circuit? 論理回路でスイッチとして使われるバイポーラートランジスターの安定作動点は？ A. In its saturation and cut-off regions 　　　飽和とカットオフ領域。 B. In its active region (between cut-off and saturation regions) C. Between its peak and valley current points D. Between its enhancement and deletion modes G6A15 (C) How should two solenoid inductors be placed so as to minimize their mutual inductance? ２つのソレノイドインダクターの相互インダクタンスを最小にするには？ A. In line with their winding axis B. With their winding axis parallel to each other C. At right angles to their winding axis 　　　巻軸を直角にする。 D. Within the same shielded enclosure G6A16 (B) Why might it be important to minimize the mutual inductance between two inductors? ２つのインダクター間の相互インダクタンスを最小にする訳は？ A. To increase the energy transfer between both circuits B. To reduce or eliminate stray coupling between RF stages 　　　ＲＦ段間の迷走結合を除去、若しくは、減少させる為。 C. To reduce conducted emissions D. To increase the self-resonant frequency of both inductors SUBELEMENT G7 -- PRACTICAL CIRCUITS [1 exam question -- 1 group] G7A Power supplies and filters; single-sideband transmitters and receivers G7A01 (B) What safety feature does a power-supply bleeder resistor provide? 電源の放出抵抗はどんな安全機構になるか？ A. It does not affect voltage regulation B. It discharges the filter capacitors 　　　平滑コンデンサーを放電させる。 C. It removes shock hazards from the induction coils D. It eliminates ground-loop current G7A02 (D) What components are used in a power-supply filter network? 電源の平滑回路に使われる部品は？ A. Diodes B. Transformers and transistors C. Quartz crystals D. Capacitors and inductors 　　　コンデンサーとコイル。 G7A03 (C) What should be the minimum peak-inverse-voltage rating of the rectifier in a full-wave power supply? 全波電源の整流器のピーク逆電圧の定格の最低値は？ A. One-quarter the normal output voltage of the power supply B. Half the normal output voltage of the power supply C. Double the normal peak output voltage of the power supply 　　　電源の正常ピーク出力電圧の２倍。 D. Equal to the normal output voltage of the power supply G7A04 (D) What should be the minimum peak-inverse-voltage rating of the rectifier in a half-wave power supply? 半波電源の整流器のピーク逆電圧の定格の最低値は？ A. One-quarter to one-half the normal peak output voltage of the power supply B. Half the normal output voltage of the power supply C. Equal to the normal output voltage of the power supply D. One to two times the normal peak output voltage of the power supply 　　　電源の正常ピーク出力電圧の１〜２倍。 G7A05 (B) What should be the impedance of a low-pass filter as compared to the impedance of the transmission line into which it is inserted? ローパスフィルターのインピーダンスとそれを挿入する給電線の インピーダンスはどうなってなければならないか？ A. Substantially higher B. About the same 　　　だいだい同じ。 C. Substantially lower D. Twice the transmission line impedance G7A06 (B) In a typical single-sideband phone transmitter, what circuit processes signals from the balanced modulator and sends signals to the mixer? 通常のＳＳＢ音声送信機で、平衡変調器からの信号を処理して混合器へ送る回路は？ A. Carrier oscillator B. Filter 　　　フィルター。 C. IF amplifier D. RF amplifier G7A07 (D) In a single-sideband phone transmitter, what circuit processes signals from the carrier oscillator and the speech amplifier and sends signals to the filter? ＳＳＢ音声送信機で、搬送波発信器と音声アンプからの信号を処理してフィルターへ送る回路は？ A. Mixer B. Detector C. IF amplifier D. Balanced modulator 　　　平衡変調器。 G7A08 (C) In a single-sideband phone superheterodyne receiver, what circuit processes signals from the RF amplifier and the local oscillator and sends signals to the IF filter? ＳＳＢ音声スーパーヘテロダイン受信機で、ＲＦアンプと局部発信器からの 信号を処理してＩＦフィルターへ送る回路は？ A. Balanced modulator B. IF amplifier C. Mixer 　　　混合器。 D. Detector G7A09 (D) In a single-sideband phone superheterodyne receiver, what circuit processes signals from the IF amplifier and the BFO and sends signals to the AF amplifier? ＳＳＢ音声スーパーヘテロダイン受信機で、ＩＦアンプとＢＦＯからの 信号を処理してＡＦアンプへ送る回路は？ A. RF oscillator B. IF filter C. Balanced modulator D. Detector 　　　検波器。 G7A10 (A) What type of power supply circuit is often used to provide overvoltage protection at its output? 出力の過電圧保護の為に使われる電源回路は？ A. Crowbar B. Circuit breaker C. Ferrite transformer D. Buck-out transistor G7A11 (A) What type of capacitors should be used to filter the rectified DC output of a switching power supply? 切換え電源の整流されたＤＣ出力を平滑するコンデンサーは？ A. Capacitors with low equivalent series resistance 　　　低等価直列抵抗を持ったコンデンサー。 B. Ordinary, large value electrolytic capacitors C. NPO-type ceramic disc or silver mica capacitors D. Capacitors with high equivalent series inductance G7A12 (C) Which of the following is an advantage of a switched-mode power supply as compared to a linear power supply? 線形電源と比べて、切換え方式電源の利点は？ A. Higher output voltages are possible with the switched-mode supply B. Fewer circuit components are required for the switched-mode supply C. The relatively high frequency power oscillator allows the use of small, lightweight and low-cost transformers in the switched-mode supply 　　　切換え方式電源の比較的高周波出力振動子によって、軽量で安価な変圧器が使える。 D. All of these choices are correct G7A13 (A) In a switched-mode power supply, what is the first step in converting the 120 volt AC input voltage to a 12 volt DC output voltage? 　　　切換え方式電源で、１２０ＶＡＣ入力電圧を１２ＶＤＣ出力電圧に変換する第１ステップは？ A. The 120 volt AC is first rectified and filtered 　　　１２０ＶＡＣを、まず、整流して平滑する。 B. The 120 volt AC is first converted to 12 volt AC with a transformer C. The 120 volt AC is switched off when the waveform exceeds 12 volts, and is switched on again when the waveform drops below 12 volts D. An AC clamp is used to limit the input signal to no more than 20 volts DC SUBELEMENT G8 -- SIGNALS AND EMISSIONS [2 Exam Questions -- 2 Groups] G8A Signal information; AM; FM; single and double sideband and carrier; bandwidth; modulation envelope; deviation; overmodulation G8A01 (D) What type of modulation system changes the amplitude of an RF wave for the purpose of conveying information? 情報を伝える為にＲＦ波の振幅を変える変調方式は？ A. Frequency modulation B. Phase modulation C. Amplitude-rectification modulation D. Amplitude modulation 　　　振幅変調。 G8A02 (B) What type of modulation system changes the phase of an RF wave for the purpose of conveying information? 情報を伝える為にＲＦ波の位相を変える変調方式は？ A. Pulse modulation B. Phase modulation 　　　位相変調。 C. Phase-rectification modulation D. Amplitude modulation G8A03 (D) What type of modulation system changes the frequency of an RF wave for the purpose of conveying information? 情報を伝える為にＲＦ波の周波数を変える変調方式は？ A. Phase-rectification modulation B. Frequency-rectification modulation C. Amplitude modulation D. Frequency modulation 　　　周波数変調。 G8A04 (B) What emission is produced by a reactance modulator connected to an RF power amplifier? ＲＦパワーアンプにつながれたリアクタンス変調器によって発生する電波は？ A. Multiplex modulation B. Phase modulation 　　　位相変調。 C. Amplitude modulation D. Pulse modulation G8A05 (D) In what emission type does the instantaneous amplitude (envelope) of the RF signal vary in accordance with the modulating audio? 変調音声に従ってＲＦ信号の瞬間振幅（外縁）が変化する方式は？ A. Frequency shift keying B. Pulse modulation C. Frequency modulation D. Amplitude modulation 　　　振幅変調。 G8A06 (C) How much should the carrier be suppressed below peak output power in a properly designed single-sideband (SSB) transmitter? 正しく設計されたＳＳＢ音声送信機では、搬送波がピーク出力の何ｄＢまで抑制されるか？ A. No more than 20 dB B. No more than 30 dB C. At least 40 dB 　　　少なくとも４０ｄＢ。 D. At least 60 dB G8A07 (C) What is one advantage of carrier suppression in a double-sideband phone transmission? ＤＳＢ音声送信機で搬送波を抑制する利点は？ A. Only half the bandwidth is required for the same information content B. Greater modulation percentage is obtainable with lower distortion C. More power can be put into the sidebands 　　　より多くの出力を側波に送る事が出来る。 D. Simpler equipment can be used to receive a double-sideband suppressed-carrier signal G8A08 (A) Which popular phone emission uses the narrowest frequency bandwidth? 周波数帯域が最も狭い音声送信の方式は？ A. Single-sideband 　　　ＳＳＢ。 B. Double-sideband C. Phase-modulated D. Frequency-modulated G8A09 (D) What happens to the signal of an overmodulated single-sideband or double-sideband phone transmitter? 過変調のＳＳＢやＤＳＢ音声送信機の信号はどうなる？ A. It becomes louder with no other effects B. It occupies less bandwidth with poor high-frequency response C. It has higher fidelity and improved signal-to-noise ratio D. It becomes distorted and occupies more bandwidth 　　　歪んで、帯域が広がる。 G8A10 (B) How should the microphone gain control be adjusted on a single-sideband phone transmitter? ＳＳＢ音声送信機で、マイクゲインはどう調整するか？ A. For full deflection of the ALC meter on modulation peaks B. For slight movement of the ALC meter on modulation peaks 　　　変調のピークでＡＬＣメーターが僅かに動くように。 C. For 100% frequency deviation on modulation peaks D. For a dip in plate current G8A11 (C) What is meant by flattopping in a single-sideband phone transmission? ＳＳＢ音声送信機で、フラットトッピングとは？ A. Signal distortion caused by insufficient collector current B. The transmitter's automatic level control is properly adjusted C. Signal distortion caused by excessive drive 　　　過剰な入力で歪んだ信号。 D. The transmitter's carrier is properly suppressed G8A12 (A) What happens to the RF carrier signal when a modulating audio signal is applied to an FM transmitter? 変調音声信号がＦＭ送信機に加えられた時、ＲＦ搬送波はどうなるか？ A. The carrier frequency changes proportionally to the instantaneous amplitude of the modulating signal 　　　変調信号の瞬間振幅に比例して変化する。 B. The carrier frequency changes proportionally to the amplitude and frequency of the modulating signal C. The carrier amplitude changes proportionally to the instantaneous frequency of the modulating signal D. The carrier phase changes proportionally to the instantaneous amplitude of the modulating signal G8A13 (A) What signal(s) would be found at the output of a properly adjusted balanced modulator? 正しく調整された平衡変調器の出力信号は？ A. Both upper and lower sidebands 　　　上側と下側側波。 B. Either upper or lower sideband, but not both C. Both upper and lower sidebands and the carrier D. The modulating signal and the unmodulated carrier G8B Frequency mixing; multiplication; bandwidths; HF data communications G8B01 (A) What receiver stage combines a 14.25-MHz input signal with a 13.795-MHz oscillator signal to produce a 455-kHz intermediate frequency (IF) signal? １４．２５ＭＨｚの入力信号と１３．７９５ＭＨｚの発信器信号を結合して ４５５ＫＨｚの中間周波数（ＩＦ）を発生させる受信機の段は？ A. Mixer 　　　混合器。 B. BFO C. VFO D. Multiplier G8B02 (B) If a receiver mixes a 13.800-MHz VFO with a 14.255-MHz received signal to produce a 455-kHz intermediate frequency (IF) signal, what type of interference will a 13.345-MHz signal produce in the receiver? 受信機が１３．８ＭＨｚのＶＦＯと１４．２５５ＭＨｚの受信信号を混合して ４５５ＫＨｚの中間周波数を発生させる時、１３．３４５ＭＨｚの信号は 何と言うタイプの混信を起こすか？ A. Local oscillator B. Image response 　　　影像混信。 C. Mixer interference D. Intermediate interference G8B03 (A) What stage in a transmitter would change a 5.3-MHz input signal to 14.3 MHz? ５．３ＭＨｚの入力信号を１４．３ＭＨｚに変換する送信機の段は？ A. A mixer 　　　混合器。 B. A beat frequency oscillator C. A frequency multiplier D. A linear translator G8B04 (D) What is the name of the stage in a VHF FM transmitter that selects a harmonic of an HF signal to reach the desired operating frequency? ＶＨＦのＦＭ送信機でＨＦ信号の高調波を選択して希望の運用周波数にする段は？ A. Mixer B. Reactance modulator C. Preemphasis network D. Multiplier 　　　逓倍器。 G8B05 (C) Why isn't frequency modulated (FM) phone used below 29.5 MHz? 周波数変調（ＦＭ）音声が２９．５ＭＨｚ以下で使われない理由は？ A. The transmitter efficiency for this mode is low B. Harmonics could not be attenuated to practical levels C. The bandwidth would exceed FCC limits 　　　周波数幅がＦＣＣの制限を超えている。 D. The frequency stability would not be adequate G8B06 (D) What is the total bandwidth of an FM-phone transmission having a 5-kHz deviation and a 3-kHz modulating frequency? 偏移５ＫＨｚで３ＫＨｚの変調周波数のＦＭ音声送信機の全周波数幅は？ A. 3 kHz B. 5 kHz C. 8 kHz D. 16 kHz G8B07 (B) What is the frequency deviation for a 12.21-MHz reactance-modulated oscillator in a 5-kHz deviation, 146.52-MHz FM-phone transmitter? １４６．５２ＭＨｚのＦＭ音声送信機で５ＫＨｚ偏移の １２．２１ＭＨｚリアクタンス変調発信機の周波数偏移は？ A. 41.67 Hz B. 416.7 Hz C. 5 kHz D. 12 kHz G8B08 (C) How is frequency shift related to keying speed in an FSK signal? ＦＳＫ信号のキー速度と周波数シフトの関係は？ A. The frequency shift in hertz must be at least four times the keying speed in WPM B. The frequency shift must not exceed 15 Hz per WPM of keying speed C. Greater keying speeds require greater frequency shifts 　　　キー速度が大きくなれば、大きい周波数シフトが必要になる。 D. Greater keying speeds require smaller frequency shifts G8B09 (B) What do RTTY, Morse code, PSK31 and packet communications have in common? ＲＴＴＹ、モールス符号、ＰＳＫ３１、パケット通信に共通のものは？ A. They are multipath communications B. They are digital communications 　　　デジタル通信である。 C. They are analog communications D. They are only for emergency communications G8B10 (B) When sending data modes, why is it important to know the duty cycle of the mode you are using? データモードで送信する時、使用中のモードのデューティーサイクルを知っておく必要があるのは？ A. Your connectors, feed line or antenna may be rated for intermittent amateur service B. To prevent damage to your transmitter's final output stage due to its inability to dissipate excess heat 　　　過剰な熱を発散出来ない事による送信器の最終出力段の損傷を防ぐ。 C. To prevent blowing your power supply's fuse due to its inability to dissipate excess heat D. All of these choices are correct G8B11 (D) In what segment of the 20-meter band are most PSK31 operations found? ２０ｍ帯のどの領域で殆どのＰＳＫ３１運用が聞こえるか？ A. At the bottom of the slow-scan TV segment, near 14.230 MHz B. At the top of the SSB phone segment, near 14.325 MHz C. In the middle of the CW segment, near 14.100 MHz D. Below the RTTY segment, near 14.070 MHz 　　　１４．０７０付近、ＲＴＴＹ領域の下。 G8B12 (A) [97.303s] What is the maximum bandwidth permitted by FCC rules for amateur radio stations when operating on USB frequencies in the 60-meter band? ６０ｍ帯のＵＳＢ周波数で運用する時に、アマチュア無線局に許可された最大帯域幅は？ A. 2.8 kHz B. 5.6 kHz C. +/-2.8 kHz D. 3 kHz G8B13 (A) What is another term for the mixing of two RF signals? ２つのＲＦ信号を混合する事の別称は？ A. Heterodyning 　　　ヘテロダイン。 B. Synthesizing C. Cancellation D. Multiplying SUBELEMENT G9 -- ANTENNAS AND FEED-LINES [4 Exam Questions -- 4 Groups] G9A Yagi antennas - physical dimensions; impedance matching; radiation patterns; directivity and major lobes G9A01 (A) When designing a Yagi antenna, how can the SWR bandwidth be increased? 八木アンテナを設計する時、ＳＷＲ帯幅を広げるには？ A. Use larger diameter elements 　　　径のより大きいエレメントを使う。 B. Use closer element spacing C. Use traps on the elements D. Use tapered-diameter elements G9A02 (B) Approximately how long is the driven element of a Yagi antenna for 14.0 MHz? １４．０ＭＨｚ八木アンテナの放射エレメントのおおよその長さは？ A. 17 feet B. 33 feet 　　　３３フィート（１フィート＝０．３０４８ｍ、訳者注）。 C. 35 feet D. 66 feet G9A03 (B) Approximately how long is the director element of a Yagi antenna for 21.1 MHz? ２１．１ＭＨｚ八木アンテナの導波エレメントのおおよその長さは？ A. 42 feet B. 21 feet 　　　２１フィート（１フィート＝０．３０４８ｍ、訳者注）。 C. 17 feet D. 10.5 feet G9A04 (C) Approximately how long is the reflector element of a Yagi antenna for 28.1 MHz? ２８．１ＭＨｚ八木アンテナの反射エレメントのおおよその長さは？ A. 8.75 feet B. 16.6 feet C. 17.5 feet 　　　１７．５フィート（１フィート＝０．３０４８ｍ、訳者注）。 D. 35 feet G9A05 (B) Which statement about a three-element Yagi antenna is true? ３エレメント八木アンテナに関して正しいのは？ A. The reflector is normally the shortest parasitic element B. The director is normally the shortest parasitic element 　　　導波器は通常一番短いパラサイティックエレメントである。 C. The driven element is the longest parasitic element D. Low feed-point impedance increases bandwidth G9A06 (A) What is one effect of increasing the boom length and adding directors to a Yagi antenna? 八木アンテナのブーム長を長くして導波器を加えるとどうなるか？ A. Gain increases 　　　ゲインが増える。 B. SWR increases C. Weight decreases D. Wind load decreases G9A07 (C) Why is a Yagi antenna often used for radio communications on the 20-meter band? 八木アンテナが２０ｍ帯の無線通信に良く使われる理由は？ A. It provides excellent omnidirectional coverage in the horizontal Plane B. It is smaller, less expensive and easier to erect than a dipole or vertical antenna C. It helps reduce interference from other stations off to the side or behind 　　　横や後ろ方向の局からの混信を減らす事が出来るから。 D. It provides the highest possible angle of radiation for the HF bands G9A08 (C) What does "antenna front-to-back ratio" mean in reference to a Yagi antenna? 八木アンテナのＦＢ比とは？ A. The number of directors versus the number of reflectors B. The relative position of the driven element with respect to the reflectors and directors C. The power radiated in the major radiation lobe compared to the power radiated in exactly the opposite direction 　　　主放射ローブに放射される電力と逆方向に放射される電力の比。 D. The power radiated in the major radiation lobe compared to the power radiated 90 degrees away from that direction G9A09 (D) What is the "main lobe" of a Yagi antenna radiation pattern? 八木アンテナ放射パターンのメインローブとは？ A. The direction of least radiation from the antenna B. The point of maximum current in a radiating antenna element C. The maximum voltage standing wave point on a radiating element D. The direction of maximum radiated field strength from the antenna 　　　アンテナから放射される電界が最も強い方向。 G9A10 (A) What is a good way to get maximum performance from a Yagi antenna? 八木アンテナの最大効率を引き出す良い方法は？ A. Optimize the lengths and spacing of the elements 　　　エレメントの長さと間隔を最適にする。 B. Use RG-58 feed-line C. Use a reactance bridge to measure the antenna performance from each direction around the antenna D. Avoid using towers higher than 30 feet above the ground G9A11 (D) Which of the following is NOT a Yagi antenna design variable that should be considered to optimize the forward gain, front-to-rear ratio and SWR bandwidth? 八木アンテナの前方ゲイン、ＦＢ比、ＳＷＲ帯幅を最適にする際に アンテナ設計変数でないものは？ A. The physical length of the boom B. The number of elements on the boom C. The spacing of each element along the boom D. The polarization of the antenna elements 　　　アンテナエレメントの偏波。 G9B Loop antennas - physical dimensions; impedance matching; radiation patterns; directivity and major lobes G9B01 (B) Approximately how long is each side of a cubical-quad antenna driven element for 21.4 MHz? ２１．４ＭＨｚキュービカルクワッドアンテナ放射エレメントの１辺のおおよその長さは？ A. 1.17 feet B. 11.7 feet 　　　１１．７フィート（１フィート＝０．３０４８ｍ、訳者注）。 C. 47 feet D. 469 feet G9B02 (A) Approximately how long is each side of a cubical-quad antenna driven element for 14.3 MHz? １４．３ＭＨｚキュービカルクワッドアンテナ放射エレメントの１辺のおおよその長さは？ A. 17.6 feet 　　　１７．６フィート（１フィート＝０．３０４８ｍ、訳者注）。 B. 23.4 feet C. 70.3 feet D. 175 feet G9B03 (B) Approximately how long is each side of a cubical-quad antenna reflector element for 29.6 MHz? ２９．６ＭＨｚキュービカルクワッドアンテナ反射エレメントの１辺のおおよその長さは？ A. 8.23 feet B. 8.7 feet 　　　８．７フィート（１フィート＝０．３０４８ｍ、訳者注）。 C. 9.7 feet D. 34.8 feet G9B04 (B) Approximately how long is each leg of a symmetrical delta-loop antenna driven element for 28.7 MHz? ２８．７ＭＨｚデルタループアンテナ放射エレメントの１辺のおおよその長さは？ A. 8.75 feet B. 11.7 feet 　　　１１．７フィート（１フィート＝０．３０４８ｍ、訳者注）。 C. 23.4 feet D. 35 feet G9B05 (C) Approximately how long is each leg of a symmetrical delta-loop antenna driven element for 24.9 MHz? ２４．９ＭＨｚデルタループアンテナ放射エレメントの１辺のおおよその長さは？ A. 10.99 feet B. 12.95 feet C. 13.45 feet 　　　１３．４５フィート（１フィート＝０．３０４８ｍ、訳者注）。 D. 40.36 feet G9B06 (C) Approximately how long is each leg of a symmetrical delta-loop antenna reflector element for 14.1 MHz? １４．１ＭＨｚデルタループアンテナ反射エレメントの１辺のおおよその長さは？ A. 18.26 feet B. 23.76 feet C. 24.35 feet 　　　２４．３５フィート（１フィート＝０．３０４８ｍ、訳者注）。 D. 73.05 feet G9B07 (A) Which statement about quad antennas is true? クワッドアンテナに関して正しいのは？ A. They compare favorably with a three-element Yagi 　　　３エレメント八木アンテナ同等である。 B. They perform poorly above HF C. They perform very well only at HF D. They are effective only when constructed using insulated wire G9B08 (D) Compared to a dipole antenna, what are the directional radiation characteristics of a cubical-quad antenna? ダイポールアンテナと比べて、キュービカルクワッドアンテナの放射指向特性は？ A. The quad has more directivity in the horizontal plane but less directivity in the vertical plane B. The quad has less directivity in the horizontal plane but more directivity in the vertical plane C. The quad has less directivity in both horizontal and vertical planes D. The quad has more directivity in both horizontal and vertical planes 　　　クワッドアンテナは、水平、垂直の両方により指向性が在る。 G9B09 (D) Moving the feed point of a multielement quad antenna from a side parallel to the ground to a side perpendicular to the ground will have what effect? 複数エレメントのクワッドアンテナの給電点を地表に平行な辺から 地表に垂直な辺に動かすとどんな影響が在るか？ A. It will significantly increase the antenna feed-point impedance B. It will significantly decrease the antenna feed-point impedance C. It will change the antenna polarization from vertical to horizontal D. It will change the antenna polarization from horizontal to vertical 　　　アンテナの偏波を水平から垂直に変える。 G9B10 (D) What does the term "antenna front-to-back ratio" mean in reference to a cubical-quad antenna? キュービカルクワッドアンテナに関してＦＢ比とは？ A. The number of directors versus the number of reflectors B. The relative position of the driven element with respect to the reflectors and directors C. The power radiated in the major radiation lobe compared to the power radiated 90 degrees away from that direction D. The power radiated in the major radiation lobe compared to the power radiated in exactly the opposite direction 　　　主放射ローブに放射される電力と逆方向に放射される電力の比。 G9B11 (C) What is the "main lobe" of a cubical-quad antenna radiation pattern? キュービカルクワッドアンテナの放射パターンで主ローブは？ A. The direction of least radiation from an antenna B. The point of maximum current in a radiating antenna element C. The direction of maximum radiated field strength from the antenna 　　　アンテナから放射される電界が最も強い方向。 D. The maximum voltage standing wave point on a radiating element G9C Random wire antennas - physical dimensions; impedance matching; radiation patterns; directivity and major lobes; feed point impedance of 1/2-wavelength dipole and 1/4-wavelength vertical antennas G9C01 (A) What type of multiband transmitting antenna does NOT require a feed-line? 給電線の要らないマルチバンド送信アンテナは？ A. An end-fed random-wire antenna 　　　終端給電ランダムワイヤアンテナ。 B. A triband Yagi antenna C. A delta-loop antenna D. A Beverage antenna G9C02 (D) What is one advantage of using a random-wire antenna? ランダムワイヤアンテナの使用で有利な点は？ A. It is more efficient than any other kind of antenna B. It will keep RF energy out of your station C. It doesn't need an impedance matching network D. It is a multiband antenna 　　　マルチバンドアンテナである。 G9C03 (B) What is one disadvantage of a random-wire antenna? ランダムワイヤアンテナの使用で不利な点は？ A. It must be longer than 1 wavelength B. You may experience RF feedback in your station 　　　ＲＦフィードバックが在る事がある。 C. It usually produces vertically polarized radiation D. You must use an inverted-T matching network for multiband operation G9C04 (D) What is an advantage of downward sloping radials on a ground-plane antenna? グランドプレーンアンテナで下向きに傾斜したラジアルのメリットは？ A. It lowers the radiation angle B. It brings the feed-point impedance closer to 300 ohms C. It increases the radiation angle D. It brings the feed-point impedance closer to 50 ohms 　　　給電点インピーダンスを５０Ωに近づける。 G9C05 (B) What happens to the feed-point impedance of a ground-plane antenna when its radials are changed from horizontal to downward-sloping? ラジアルを水平から下向きに傾斜させると、グランドプレーンアンテナの 給電点インピーダンスはどうなるか？ A. It decreases B. It increases 　　　増える。 C. It stays the same D. It approaches zero G9C06 (A) What is the low-angle radiation pattern of an ideal half-wavelength dipole HF antenna installed a half-wavelength high, parallel to the earth? 地面と水平に半波長の高さに設置された理論半波長ダイポールアンテナの低角度放射パターンは？ A. It is a figure-eight at right angles to the antenna 　　　アンテナに直角な８の字。 B. It is a figure-eight off both ends of the antenna C. It is a circle (equal radiation in all directions) D. It is two smaller lobes on one side of the antenna, and one larger lobe on the other side G9C07 (C) How does antenna height affect the horizontal (azimuthal) radiation pattern of a horizontal dipole HF antenna? 水平ダイポールＨＦアンテナの水平（頭上）放射パターンはアンテナの高さでどう変わるか。 A. If the antenna is too high, the pattern becomes unpredictable B. Antenna height has no effect on the pattern C. If the antenna is less than one-half wavelength high, the azimuthal pattern is almost omnidirectional 　　　高さが半波長より低いと頭上パターンは殆ど全方向。 D. If the antenna is less than one-half wavelength high, radiation off the ends of the wire is eliminated G9C08 (D) If the horizontal radiation pattern of an antenna shows a major lobe at 0 degrees and a minor lobe at 180 degrees, how would you describe the radiation pattern of this antenna? アンテナの水平放射パターンが０°に主ローブ、１８０°に小ローブを示したら、 このアンテナの放射パターンをどう説明するか？ A. Most of the signal would be radiated towards 180 degrees and a smaller amount would be radiated towards 0 degrees B. Almost no signal would be radiated towards 0 degrees and a small amount would be radiated towards 180 degrees C. Almost all the signal would be radiated equally towards 0 degrees and 180 degrees D. Most of the signal would be radiated towards 0 degrees and a smaller amount would be radiated towards 180 degrees 　　　殆どの信号が０°方向へ放射され、少しだけ１８０°方向へ放射される。 G9C09 (D) If a slightly shorter parasitic element is placed 0.1 wavelength away and parallel to an HF dipole antenna mounted above ground, what effect will this have on the antenna's radiation pattern? 少しだけ短いパラサイティックエレメントが地上に設置されたＨＦダイポールアンテナから ０．１波長離れて平行に置かれたら、アンテナの放射パターンにどんな影響があるか？ A. The radiation pattern will not be affected B. A major lobe will develop in the horizontal plane, parallel to the two elements C. A major lobe will develop in the vertical plane, away from the ground D. A major lobe will develop in the horizontal plane, toward the parasitic element 　　　主ローブが水平面上にパラサイティックエレメントに向かって展開する。 G9C10 (B) If a slightly longer parasitic element is placed 0.1 wavelength away and parallel to an HF dipole antenna mounted above ground, what effect will this have on the antenna's radiation pattern? 少しだけ長いパラサイティックエレメントが地上に設置されたＨＦダイポールアンテナから ０．１波長離れて平行に置かれたら、アンテナの放射パターンにどんな影響があるか？ A. The radiation pattern will not be affected B. A major lobe will develop in the horizontal plane, away from the parasitic element, toward the dipole 　　　主ローブが水平面上にパラサイティックエレメントからダイポールに向かって展開する。 C. A major lobe will develop in the vertical plane, away from the ground D. A major lobe will develop in the horizontal plane, parallel to the two elements G9C11 (C) Where should the radial wires of a ground-mounted vertical antenna system be placed? 垂直接地アンテナのラジアル線は、何処に設置するか？ A. As high as possible above the ground B. Parallel to the antenna element C. On the surface or buried a few inches below the ground 　　　地表か地下数インチに埋める。 D. At the top of the antenna G9D Popular antenna feed-lines - characteristic impedance and impedance matching; SWR calculations G9D01 (A) Which of the following factors help determine the characteristic impedance of a parallel-conductor antenna feed-line? 平行導体アンテナの給電線の特性インピーダンスを決める要因は？ A. The distance between the centers of the conductors and the radius of the conductors 　　　導線中央間距離と導線の半径。 B. The distance between the centers of the conductors and the length of the line C. The radius of the conductors and the frequency of the signal D. The frequency of the signal and the length of the line G9D02 (B) What is the typical characteristic impedance of coaxial cables used for antenna feed-lines at amateur stations? アマチュア局のアンテナ給電線に使われる同軸ケーブルの特性インピーダンスは？ A. 25 and 30 ohms B. 50 and 75 ohms 　　　５０Ωと７５Ω。 C. 80 and 100 ohms D. 500 and 750 ohms G9D03 (D) What is the characteristic impedance of flat-ribbon TV-type twin-lead? 平リボンＴＶ用対電線の特性インピーダンスは？ A. 50 ohms B. 75 ohms C. 100 ohms D. 300 ohms 　　　３００Ω。 G9D04 (C) What is the typical cause of power being reflected back down an antenna feed-line? アンテナ給電線に電力が跳ね返ってくる原因は？ A. Operating an antenna at its resonant frequency B. Using more transmitter power than the antenna can handle C. A difference between feed line impedance and antenna feed-point impedance 　　　給電線のインピーダンスとアンテナ給電点のインピーダンスの違い。 D. Feeding the antenna with unbalanced feed-line G9D05 (D) What must be done to prevent standing waves of voltage and current on an antenna feed-line? アンテナ給電線上の電圧と電流の定在波を防ぐには？ A. The antenna feed point must be at DC ground potential B. The feed line must be cut to an odd number of electrical quarter-wavelengths long C. The feed line must be cut to an even number of physical half wavelengths long D. The antenna feed-point impedance must be matched to the characteristic impedance of the feed-line 　　　アンテナ給電点のインピーダンスを給電線の特性インピーダンスに合わせる。 G9D06 (C) Under what conditions would you use an inductively coupled matching network with a dipole antenna fed with parallel-conductor feed line? 平行導線給電線で給電するダイポールアンテナに誘導結合マッチング回路を使うのは？ A. It would not normally be used with parallel-conductor feed lines B. It would be used to increase the SWR to an acceptable level C. It would be used to match the unbalanced transmitter output to the balanced parallel-conductor feed line 　　　送信機の不平衡出力を平衡な平行導線給電線へマッチングさせる。 D. It would be used at the antenna feed point to tune out the radiation resistance G9D07 (A) If a 160-meter signal and a 2-meter signal pass through the same coaxial cable, how will the attenuation of the two signals compare? １６０ｍの信号と２ｍの信号が同じ同軸ケーブルを通る時、信号の減衰は？ A. It will be greater at 2 meters 　　　２ｍの方が大きい。 B. It will be less at 2 meters C. It will be the same at both frequencies D. It will depend on the emission type in use G9D08 (D) In what values are RF feed line losses usually expressed? ＲＦ給電線の損失は通常何で表されるか？ A. Bels/1000 ft B. dB/1000 ft C. Bels/100 ft D. dB/100 ft 　　　ｄＢ／１００フィート。 G9D09 (A) What standing-wave-ratio will result from the connection of a 50-ohm feed line to a resonant antenna having a 200-ohm feed-point impedance? ５０Ωの給電線を給電点インピーダンス２００Ωの共振アンテナにつないだ時のＳＷＲはいくらになるか？ A. 4:1 　　　進行波４：反射波１。 B. 1:4 C. 2:1 D. 1:2 G9D10 (D) What standing-wave-ratio will result from the connection of a 50-ohm feed line to a resonant antenna having a 10-ohm feed-point impedance? ５０Ωの給電線を給電点インピーダンス１０Ωの共振アンテナにつないだ時のＳＷＲはいくらになるか？ A. 2:1 B. 50:1 C. 1:5 D. 5:1 　　　進行波５：反射波１。 G9D11 (B) What standing-wave-ratio will result from the connection of a 50-ohm feed line to a resonant antenna having a 50-ohm feed-point impedance? ５０Ωの給電線を給電点インピーダンス５０Ωの共振アンテナにつないだ時のＳＷＲはいくらになるか？ A. 2:1 B. 1:1 　　　進行波１：反射波１。 C. 50:50 D. 0:0 G9D12 (B) What physical aspects of an air-insulated parallel-conductor transmission line determine its characteristic impedance? 空気絶縁平衡導線給電線の特性インピーダンスを決める物理条件は？ A. The RF resistance of the conductors and the length of the conductors B. The diameter of the conductors and the distance between their centers 　　　導線の直径と中心間距離。 C. The RF resistance of the conductors and the dielectric constant of the insulation D. The resistance of each wire to RF ground and the antenna's impedance G9D13 (A) What would be the SWR if you feed a vertical antenna that has a 25-ohm feed-point impedance with 50-ohm coaxial cable? ５０Ωの同軸ケーブルを給電点インピーダンス２５Ωの垂直アンテナにつないだ時のＳＷＲはいくらになるか？ A. 2:1 　　　進行波２：反射波１。 B. 2.5:1 C. 1.25:1 D. You cannot determine SWR from impedance values G9D14 (C) What would be the SWR if you feed a folded dipole antenna that has a 300-ohm feed-point impedance with 50-ohm coaxial cable? ５０Ωの同軸ケーブルを給電点インピーダンス３００Ωのフォールデッドダイポールアンテナにつないだ時のＳＷＲはいくらになるか？ A. 1.5:1 B. 3:1 C. 6:1 　　　進行波６：反射波１。 D. You cannot determine SWR from impedance values SUBELEMENT G0 -- RF SAFETY [5 Exam Questions -- 5 Groups] G0A RF Safety Principles G0A01 (A) Depending on the wavelength of the signal, the energy density of the RF field, and other factors, in what way can RF energy affect body tissue? 信号の波長、ＲＦフィールドのエネルギー密度、その他の要因によって、 ＲＦエネルギーは、体組織にどのような影響を与えるか？ A. It heats body tissue 　　　体組織を加熱する。 B. It causes radiation poisoning C. It causes the blood count to reach a dangerously low level D. It cools body tissue G0A02 (B) Which property is NOT important in estimating RF energy's effect on body tissue? ＲＦエネルギーの体組織への影響を推測するのに重要でない特性は？ A. Its duty cycle B. Its critical angle 　　　臨界角度。 C. Its power density D. Its frequency G0A03 (B) Which of the following has the most direct effect on the permitted exposure level of RF radiation? ＲＦ放射の許容被爆レベルに最も直接関わるのは？ A. The maximum usable frequency of the ionosphere B. The frequency (or wavelength) of the energy 　　　エネルギーの周波数（若しくは波長）。 C. The environment near the transmitter D. The distance from the antenna G0A04 (C) What unit of measurement best describes the biological effects of RF fields at frequencies used by amateur operators? アマチュア局が使う周波数のＲＦフィールドの生体影響を最も良く表す単位は？ A. Electric field strength (V/m) B. Magnetic field strength (A/m) C. Specific absorption rate (W/kg) 　　　比吸収率（Ｗ／Ｋｇ）。 D. Power density (W/cm2) G0A05 (D) RF radiation in which of the following frequency ranges has the most effect on the human eyes? 人間の目に最も影響を与えるＲＦ放射の周波数領域は？ A. The 3.5-MHz range B. The 2-MHz range C. The 50-MHz range D. The 1270-MHz range 　　　１２７０ＭＨｚ領域。 G0A06 (A) What does the term "athermal effects" of RF radiation mean? ＲＦ放射の非熱効果とは何か？ A. Biological effects from RF energy other than heating 　　　ＲＦエネルギーの加熱以外の生体影響。 B. Chemical effects from RF energy on minerals and liquids C. A change in the phase of a signal resulting from the heating of an antenna D. Biological effects from RF energy in excess of the maximum permissible exposure level G0A07 (B) At what frequencies does the human body absorb RF energy at a maximum rate? 人体は、どの周波数でＲＦエネルギーを最大レートで吸収するか？ A. The high-frequency (3-30-MHz) range B. The very-high-frequency (30-300-MHz) range 　　　ＶＨＦ（３０−３００ＭＨｚ）の領域。 C. The ultra-high-frequency (300-MHz to 3-GHz) range D. The super-high-frequency (3-GHz to 30-GHz) range G0A08 (D) What does "time averaging" mean when it applies to RF radiation exposure? ＲＦ放射被爆に適用する時、時間平均とは？ A. The average time of day when the exposure occurs B. The average time it takes RF radiation to have any long term effect on the body C. The total time of the exposure, e.g. 6 minutes or 30 minutes D. The total RF exposure averaged over a certain time 　　　ＲＦ全被爆量を時間で平均したもの。 G0A09 (D) What guideline is used to determine whether or not a routine RF evaluation must be performed for an amateur station? アマチュア局で日常的なＲＦ評価を行わなければならないかどうかを決めるガイドラインは？ A. If the transmitter's PEP is 50 watts or more, an evaluation must always be performed B. If the RF radiation from the antenna system falls within a controlled environment, an evaluation must be performed C. If the RF radiation from the antenna system falls within an uncontrolled environment, an evaluation must be performed D. If the transmitter's PEP and frequency are within certain limits given in Part 97, an evaluation must be performed 　　　送信機のＰＥＰと周波数がＰａｒｔ９７に記載の在る境界内であれば、評価を行わなければならない。 G0A10 (A) If you perform a routine RF evaluation on your station and determine that its RF fields exceed the FCC's exposure limits in human-accessible areas, what are you required to do? 日常ＲＦ評価を行って、人間が立ち入るエリアでＲＦフィールドがＦＣＣの 被爆限界を超えていることが分かったら何をしなければならないか？ A. Take action to prevent human exposure to the excessive RF fields 　　　人体が過剰なＲＦフィールドに晒されないように防護策を講じる。 B. File an Environmental Impact Statement (EIS-97) with the FCC C. Secure written permission from your neighbors to operate above the controlled MPE limits D. Nothing; simply keep the evaluation in your station records G0A11 (C) At a site with multiple transmitters operating at the same time, how is each transmitter included in the RF exposure site evaluation? 複数の送信機が同時に運用している場所で､個別の送信機は場所のＲＦ被爆評価に どのように計算に入れるか？ A. Only the RF field of the most powerful transmitter need be considered B. The RF fields of all transmitters are multiplied together C. Transmitters that produce more than 5% of the maximum permissible power density exposure limit for that transmitter must be included 　　　その送信機の最大許容出力密度被爆限度の５％以上を発生する送信機は計算に入れる。 D. Only the RF fields from any transmitters operating with high duty-cycle modes (greater than 50%) need to be considered G0A12 (D) What factors can affect the thermal aspects of RF energy exposure to human body tissues? 人体組織に対するＲＦエネルギー被爆の熱側面に影響する要因は？ A. The body part and duration of its exposure 　　　被爆する体の部分と時間。 B. Frequency and power density 　　　周波数と出力密度。 C. Wave polarization 　　　偏波。 D. All of these choices are correct 　　　全て正しい。 G0B RF Safety Rules and Guidelines G0B01 (C) What are the FCC's RF-safety rules designed to control? ＦＣＣのＲＦ安全規則が規制しようとするものは？ A. The maximum RF radiated electric field strength B. The maximum RF radiated magnetic field strength C. The maximum permissible human exposure to all RF radiated fields 　　　全ＲＦ放射フィールドに対する最大許容人体被爆。 D. The maximum RF radiated power density G0B02 (A) At a site with multiple transmitters, who must ensure that all FCC RF-safety regulations are met? 複数の送信機がある場所で、ＦＣＣのＲＦ安全規則が全部守られていることを確認するのは？ A. All licensees contributing more than 5% of the maximum permissible power density exposure for that transmitter are equally responsible 　　　その送信機の最大許容出力密度被爆限度の５％以上を発生させている免許人は等しく責任が在る。 B. Only the licensee of the station producing the strongest RF field is responsible C. All of the stations at the site are equally responsible, regardless of any station's contribution to the total RF field D. Only the licensees of stations which are producing an RF field exceeding the maximum permissible exposure limit are responsible G0B03 (A) What effect does duty cycle have when evaluating RF exposure? ＲＦ被爆を評価する時に、デューティーサイクルの影響は？ A. Low duty-cycle emissions permit greater short-term exposure levels 　　　低デューティーサイクルの放射では、より大きな短期被爆レベルを許容する。 B. High duty-cycle emissions permit greater short-term exposure levels C. The duty cycle is not considered when evaluating RF exposure D. Any duty cycle may be used as long as it is less than 100 percent G0B04 (B) What is the threshold power used to determine if an RF environmental evaluation is required when the operation takes place in the 15-meter band? １５ｍで運用する時、ＲＦ環境評価が必要かどうかを決める閾値出力は？ A. 50 watts PEP B. 100 watts PEP 　　　１００Ｗ　ＰＥＰ。 C. 225 watts PEP D. 500 watts PEP G0B05 (B) Why do the power levels used to determine if an RF environmental evaluation is required vary with frequency? ＲＦ環境評価が必要かどうかを決める出力レベルが周波数によって違うのは？ A. Because amateur operators may use a variety of power levels B. Because Maximum Permissible Exposure (MPE) limits are frequency dependent 　　　最大許容被爆（ＭＰＥ）限界は、周波数に依存するから。 C. Because provision must be made for signal loss due to propagation D. All of these choices are correct G0B06 (A) What is the threshold power used to determine if an RF environmental evaluation is required when the operation takes place in the 10-meter band? １０ｍで運用する時、ＲＦ環境評価が必要かどうかを決める閾値出力は？ A. 50 watts PEP 　　　５０Ｗ　ＰＥＰ。 B. 100 watts PEP C. 225 watts PEP D. 500 watts PEP G0B07 (D) What is the threshold power used to determine if an RF environmental evaluation is required for transmissions in the amateur bands with frequencies less than 10 MHz? １０ＭＨｚ以下の周波数のアマチュア帯で送信する時、ＲＦ環境評価が必要かどうかを決める閾値出力は？ A. 50 watts PEP B. 100 watts PEP C. 225 watts PEP D. 500 watts PEP 　　　５００Ｗ　ＰＥＰ。 G0B08 (D) What amateur frequency bands have the lowest power limits above which an RF environmental evaluation is required? ＲＦ環境評価が必要となる出力限界が最も低いアマチュア周波数帯は？ A. All bands between 17 and 30 meters B. All bands between 10 and 15 meters C. All bands between 40 and 160 meters D. All bands between 1.25 and 10 meters 　　　１．２５〜１０ｍの全周波数帯。 G0B09 (C) What is the threshold power used to determine if an RF safety evaluation is required when the operation takes place in the 20-meter band? ２０ｍ帯で運用する時、ＲＦ安全評価が必要かどうかを決める閾値出力は？ A. 50 watts PEP B. 100 watts PEP C. 225 watts PEP D. 500 watts PEP G0B10 (D) Which of the following amateur radio stations are subject to routine environmental evaluation? 日常環境評価が必要とされるアマチュア無線局は？ A. Those stations that use gain-type antennas at HF frequencies B. All except portable stations C. All except those stations where no one is exposed to RF radiation D. Those stations with transmitter output levels exceeding 500-watts PEP on the 40, 75/80 and 160 meter bands 　　　４０、７５／８０、及び、１６０ｍ帯で出力レベルが５００Ｗ　ＰＥＰを超える送信器を備えた局。 G0C Routine Station Evaluation and Measurements (FCC Part 97 refers to RF Radiation Evaluation) G0C01 (C) If the free-space far-field strength of a 10-MHz dipole antenna measures 1.0 millivolts per meter at a distance of 5 wavelengths, what will the field strength measure at a distance of 10 wavelengths? ５波長の距離で測られた１０ＭＨｚダイポールアンテナの自由空間遠フィールド電界強度が １．０ｍＶ／ｍである時、１０波長の距離の電界強度は？ A. 0.10 millivolts per meter B. 0.25 millivolts per meter C. 0.50 millivolts per meter 　　　０．５０ｍＶ／ｍ。 D. 1.0 millivolts per meter G0C02 (B) If the free-space far-field strength of a 28-MHz Yagi antenna measures 4.0 millivolts per meter at a distance of 5 wavelengths, what will the field strength measure at a distance of 20 wavelengths? ５波長の距離で測られた２８ＭＨｚ八木アンテナの自由空間遠フィールド電界強度が ４．０ｍＶ／ｍである時、２０波長の距離の電界強度は？ A. 2.0 millivolts per meter B. 1.0 millivolts per meter 　　　１．０ｍＶ／ｍ。 C. 0.50 millivolts per meter D. 0.25 millivolts per meter G0C03 (A) If the free-space far-field strength of a 1.8-MHz dipole antenna measures 9 microvolts per meter at a distance of 4 wavelengths, what will the field strength measure at a distance of 12 wavelengths? ４波長の距離で測られた１．８ＭＨｚダイポールアンテナの自由空間遠フィールド電界強度が ９．０μＶ／ｍである時、１２波長の距離の電界強度は？ A. 3 microvolts per meter 　　　３μＶ／ｍ。 B. 3.6 microvolts per meter C. 4.8 microvolts per meter D. 10 microvolts per meter G0C04 (D) If the free-space far-field power density of a 18-MHz Yagi antenna measures 10 milliwatts per square meter at a distance of 3 wavelengths, what will it measure at a distance of 6 wavelengths? ３波長の距離で測られた１８ＭＨｚ八木アンテナの自由空間遠フィールド電力密度が １０ｍＷ／ｍ＾２である時、６波長の距離の電力密度は？ A. 11 milliwatts per square meter B. 5.0 milliwatts per square meter C. 3.3 milliwatts per square meter D. 2.5 milliwatts per square meter 　　　２．５ｍＷ／ｍ＾２。 G0C05 (B) If the free-space far-field power density of an antenna measures 9 milliwatts per square meter at a distance of 5 wavelengths, what will the field strength measure at a distance of 15 wavelengths? ５波長の距離で測られたアンテナの自由空間遠フィールド電力密度が ９ｍＷ／ｍ＾２である時、１５波長の距離の電界強度（電力密度の間違い？訳者注）は？ A. 3 milliwatts per square meter B. 1 milliwatt per square meter 　　　１ｍＷ／ｍ＾２。 C. 0.9 milliwatt per square meter D. 0.09 milliwatt per square meter G0C06 (A) What factors determine the location of the boundary between the near and far fields of an antenna? アンテナの近と遠フィールド境界の位置を決定するファクターは？ A. Wavelength of the signal and physical size of the antenna 　　　信号の波長とアンテナの物理的な寸法。 B. Antenna height and element material C. Boom length and element material D. Transmitter power and antenna gain G0C07 (D) Which of the following steps might an amateur operator take to ensure compliance with the RF safety regulations? アマチュア局がＲＦ安全規則を守っているか確かめるには？ A. Post a copy of FCC Part 97 in the station B. Post a copy of OET Bulletin 65 in the station C. Nothing; amateur compliance is voluntary D. Perform a routine RF exposure evaluation 　　　日常ＲＦ被爆評価を行う。 G0C08 (C) In the free-space far field, what is the relationship between the electric field (E field) and magnetic field (H field)? 自由空間遠フィールドの電界と磁界の関係は？ A. The electric field strength is equal to the square of the magnetic field strength B. The electric field strength is equal to the cube of the magnetic field strength C. The electric and magnetic field strength has a fixed impedance relationship of 377 ohms 　　　電界強度と磁界強度間のインピーダンスは３７７Ωで一定。 D. The electric field strength times the magnetic field strength equals 377 ohms G0C09 (B) What type of instrument can be used to accurately measure an RF field? ＲＦ電界を正確に測る装置は？ A. A receiver with an S meter B. A calibrated field-strength meter with a calibrated antenna 　　　校正されたアンテナのついた校正された電界強度計。 C. A betascope with a dummy antenna calibrated at 50 ohms D. An oscilloscope with a high-stability crystal marker generator G0C10 (C) If your station complies with the RF safety rules and you reduce its power output from 500 to 40 watts, how would the RF safety rules apply to your operations? ＲＦ安全規則に従って、出力を５００Ｗから４０Ｗに減らした場合、ＲＦ安全規則はどのように適用されるか？ A. You would need to reevaluate your station for compliance with the RF safety rules because the power output changed B. You would need to reevaluate your station for compliance with the RF safety rules because the transmitting parameters changed C. You would not need to perform an RF safety evaluation, but your station would still need to be in compliance with the RF safety rules 　　　ＲＦ安全評価を行う必要は無いが、ＲＦ安全規則に従う必要は在る。 D. The RF safety rules would no longer apply to your station because it would be operating with less than 50 watts of power G0C11 (D) If your station complies with the RF safety rules and you reduce its power output from 1000 to 500 watts, how would the RF safety rules apply to your operations? ＲＦ安全規則に従って、出力を１０００Ｗから５００Ｗに減らした場合、ＲＦ安全規則はどのように適用されるか？ A. You would need to reevaluate your station for compliance with the RF safety rules because the power output changed B. You would need to reevaluate your station for compliance with the RF safety rules because the transmitting parameters changed C. You would need to perform an RF safety evaluation to ensure your station would still be in compliance with the RF safety rules D. Since your station was in compliance with RF safety rules at a higher power output, you need to do nothing more 　　　高い方の出力でＲＦ安全規則に従っていたので、それ以上何もすることは無い。 G0D Practical RF-safety applications G0D01 (C) Considering RF safety, what precaution should you take if you install an indoor transmitting antenna? ＲＦ安全を考慮すると、室内送信アンテナを設置するときに注意する事は？ A. Locate the antenna close to your operating position to minimize feed line losses B. Position the antenna along the edge of a wall where it meets the floor or ceiling to reduce parasitic radiation C. Locate the antenna as far away as possible from living spaces that will be occupied while you are operating 　　　運用中に人の居住空間から出来るだけ離れしてアンテナを設置する。 D. Position the antenna parallel to electrical power wires to take advantage of parasitic effects G0D02 (A) Considering RF safety, what precaution should you take whenever you make adjustments to the feed line of a directional antenna system? ＲＦ安全を考慮すると、指向性アンテナの給電線を調整する時に注意する事は？ A. Be sure no one can activate the transmitter 　　　誰かが送信機の電源を入れないようにする。 B. Disconnect the antenna-positioning mechanism C. Point the antenna away from the sun so it doesn't concentrate solar energy on you D. Be sure you and the antenna structure are properly grounded G0D03 (A) What is the best reason to place a protective fence around the base of a ground-mounted transmitting antenna? 地面に据付けられた送信アンテナの基部の周りを防護フェンスで囲む理由は？ A. To reduce the possibility of persons being exposed to levels of RF in excess of the maximum permissible exposure (MPE) limits 　　　人間が最大許容被爆限界以上のＲＦを被爆する可能性を減らすため。 B. To reduce the possibility of animals damaging the antenna C. To reduce the possibility of persons vandalizing expensive equipment D. To improve the antenna's grounding system and thereby reduce the possibility of lightning damage G0D04 (B) What RF-safety precautions should you take before beginning repairs on an antenna? アンテナの修理をする前にＲＦ安全で気をつける事は？ A. Be sure you and the antenna structure are grounded B. Be sure to turn off the transmitter and disconnect the feed-line 　　　送信機の電源を切って給電線をはずす事。 C. Inform your neighbors so they are aware of your intentions D. Turn off the main power switch in your house G0D05 (D) What precaution should be taken when installing a ground-mounted antenna? 地面に据付けるアンテナを設置する前に気をつける事は？ A. It should not be installed higher than you can reach B. It should not be installed in a wet area C. It should be painted so people or animals do not accidentally run into it D. It should be installed so no one can be exposed to RF radiation in excess of the maximum permissible exposure (MPE) limits 　　　最大許容被爆限界を超えるＲＦ放射に被爆する人が居ないように設置する。 G0D06 (B) What precaution should you take before beginning repairs on a microwave feed horn or waveguide? マイクロ波の給電ホーンやウェーブガイドを修理する前に気をつける事は？ A. Wear tight-fitting clothes and gloves to protect your body and hands from sharp edges B. Be sure the transmitter is turned off and the power source is disconnected 　　　送信機の電源が切ってあり、電源がはずされている事を確認する。 C. Wait until the weather is dry and sunny D. Be sure propagation conditions are not favorable for troposphere ducting G0D07 (D) Why should directional high-gain antennas be mounted higher than nearby structures? 指向性高ゲインアンテナが隣接する建造物より高く据付けられなければならないのは？ A. To eliminate inversion of the major and minor lobes B. So they will not damage nearby structures with RF energy C. So they will receive more sky waves and fewer ground waves D. So they will not direct excessive amounts of RF energy toward people in nearby structures 　　　アンテナが過剰なＲＦエネルギーを隣接する建造物中の人間に向けないように。 G0D08 (C) For best RF safety, where should the ends and center of a dipole antenna be located? ＲＦ安全を最も良くするには、ダイポールアンテナの終端と中央をどこにするか？ A. Near or over moist ground so RF energy will be radiated away from the ground B. As close to the transmitter as possible so RF energy will be concentrated near the transmitter C. As far away as possible to minimize RF exposure to people near the antenna 　　　アンテナ付近の人へのＲＦ被爆を最小にするために出来るだけ離す。 D. Close to the ground so simple adjustments can be easily made without climbing a ladder G0D09 (B) What should you do to reduce RF radiation exposure when operating at 1270 MHz? １２７０ＭＨｚで運用中、ＲＦ放射被爆を減らすために何をするか？ A. Make sure that an RF leakage filter is installed at the antenna feed point B. Keep the antenna away from your eyes when RF is applied 　　　ＲＦが掛けられた時は、アンテナから目をそらす。 C. Make sure the standing wave ratio is low before you conduct a test D. Never use a shielded horizontally polarized antenna G0D10 (A) Considering RF safety, which of the following is the best reason to mount the antenna of a mobile VHF transceiver in the center of a metal roof? ＲＦ安全の観点から、モービルＶＨＦトランシーバーのアンテナを金属屋根の中央に取り付ける理由は？ A. The roof will greatly shield the driver and passengers from RF radiation 　　　屋根が運転者と同乗者をＲＦ放射から遮蔽するから。 B. The antenna will be out of the driver's line of sight C. The center of a metal roof is the sturdiest mounting place for an antenna D. The wind resistance of the antenna will be centered between the wheels and not drag on one side or the other G0D11 (A) Why should you avoid using attic-mounted antennas? 屋根裏設置アンテナの使用を避ける理由は？ A. They may expose people in the house to strong, near field RF energy 　　　家の中の人間に強い、近電界ＲＦエネルギーを被爆させる可能性が在る。 B. The attic may not have adequate thermal insulation for the antenna C. People moving around in the house might detune the antenna D. All of these choices are correct G0D12 (D) Why must you be careful when aiming EME (moonbounce) arrays toward the horizon? ＥＭＥ（月面反射）アレイを地平線に向ける時に気を付ける事は？ A. Their high ERP may produce hazardous RF fields in uncontrolled areas 　　　高いＥＲＰが制御されていない地域に有害ＲＦ電界を発生させる。 B. They could cause TVI/RFI for your neighbors 　　　近所にＴＶＩ／ＲＦＩを引き起こす。 C. Reflections from nearby objects could detune the array 　　　近接する物体からの反射がアレイの同調を妨げる。 D. All of these choices are correct 　　　全て正しい。 G0E RF-safety solutions G0E01 (B) If you receive minor burns every time you touch your microphone while you are transmitting, which of the following statements is true? 送信中に、マイクに触る度に軽い火傷を負う時、正しいことは？ A. You need to use a low-impedance microphone B. You and others in your station may be exposed to more than the maximum permissible level of RF radiation 　　　局の人間が最大許容レベル以上のＲＦ放射に被爆しているかもしれない。 C. You need to use a surge suppressor on your station transmitter D. All of these choices are correct G0E02 (D) If measurements indicate that individuals in your station are exposed to more than the maximum permissible level of radiation, which of the following corrective measures would be effective? 局の人間が最大許容レベル以上の放射に被爆しているという測定値を得たら、どの対策が効果的か？ A. Ensure proper grounding of the equipment 　　　装置のアースが適切か確認する。 B. Ensure that all equipment covers are tightly fastened 　　　全ての装置のカバーがちゃんとしてあるか確認する。 C. Use the minimum amount of transmitting power necessary 　　　送信出力を必要最小限にする。 D. All of these choices are correct 　　　全部正しい。 G0E03 (B) If calculations show that you and your family may be receiving more than the maximum permissible RF radiation exposure from your 20-meter indoor dipole, which of the following steps might be appropriate? 家族が２０ｍ屋内ダイポールから最大許容レベル以上の放射に被爆しているかもしれないという計算結果を得たら、どの対策が適切か？ A. Use RTTY instead of CW or SSB voice emissions B. Move the antenna to a safe outdoor environment 　　　アンテナを安全な屋外環境へ移動する。 C. Use an antenna-matching network to reduce your transmitted SWR D. All of these choices are correct G0E04 (D) Considering RF exposure, which of the following steps should you take when installing an antenna? ＲＦ被爆の観点から、アンテナ設置時に、どうすべきか？ A. Install the antenna as high and far away from populated areas as possible 　　　アンテナを出来るだけ高く、又、人が住んでいるエリヤから出来るだけ離して設置する。 B. If the antenna is a gain antenna, point it away from populated areas 　　　ゲインアンテナの場合、人が住んでいるエリヤから離れた向きにする。 C. Minimize feed line radiation into populated areas 　　　人が住んでいるエリヤへの給電線放射を最小にする。 D. All of these choices are correct 　　　全て正しい。 G0E05 (D) What might you do if an RF radiation evaluation shows that your neighbors may be receiving more than the maximum RF radiation exposure limit from your Yagi antenna when it is pointed at their house? 局の八木アンテナが近所の家を向いている時、その家の人間が八木アンテナから 最大ＲＦ放射被爆限界以上の被爆を受けているかもしれないというＲＦ放射評価が出たら、何をするか？ A. Change from horizontal polarization to vertical polarization B. Change from horizontal polarization to circular polarization C. Use an antenna with a higher front to rear ratio D. Take precautions to ensure you can't point your antenna at their house 　　　その家にアンテナを向ける事が出来ないようにする。 G0E06 (A) What might you do if an RF radiation evaluation shows that your neighbors may be receiving more than the maximum RF radiation exposure limit from your quad antenna when it is pointed at their house? 局のクワッドアンテナが近所の家を向いている時、その家の人間が最大ＲＦ放射被爆限界以上の 被爆を受けているかもしれないというＲＦ放射評価が出たら、何をするか？ A. Reduce your transmitter power to a level that reduces their exposure to a value below the maximum permissible exposure (MPE) limit 　　　被爆量が最大許容被爆限界を下回るレベルまで送信出力を下げる。 B. Change from horizontal polarization to vertical polarization C. Use an antenna with a higher front to side ratio D. Use an antenna with a sharper radiation lobe G0E07 (C) Why does a dummy antenna provide an RF safe environment for transmitter adjusting? ダミーアンテナが送信機の調整の時に、ＲＦ安全環境を提供するのは何故か？ A. The dummy antenna carries the RF energy far away from the station before releasing it B. The RF energy is contained in a halo around the outside of the dummy antenna C. The RF energy is not radiated from a dummy antenna, but is converted to heat 　　　ＲＦエネルギーはダミーアンテナから放射されずに、熱に変換される。 D. The dummy antenna provides a perfect match to the antenna feed impedance G0E08 (A) From an RF radiation exposure point of view, which of the following materials would be the best to use for your homemade transmatch enclosure? ＲＦ放射被爆の観点から、手作りのトランスマッチのケースに最適な材料は？ A. Aluminum 　　　アルミ。 B. Bakelite C. Transparent acrylic plastic D. Any nonconductive material G0E09 (B) From an RF radiation exposure point of view, what is the advantage to using a high-gain, narrow-beamwidth antenna for your VHF station? ＲＦ放射被爆の観点から、ＶＨＦ局で高ゲイン狭ビーム幅アンテナを使用する利点とは？ A. High-gain antennas absorb stray radiation B. The RF radiation can be focused in a direction away from populated areas 　　　人が住んでいるエリヤから離れた方角にＲＦ放射を集中できる。 C. Narrow-beamwidth antennas eliminate exposure in areas directly under the antenna D. All of these choices are correct G0E10 (C) From an RF radiation exposure point of view, what is the disadvantage in using a high-gain, narrow-beamwidth antenna for your VHF station? ＲＦ放射被爆の観点から、ＶＨＦ局で高ゲイン狭ビーム幅アンテナを使用する弱点とは？ A. High-gain antennas must be fed with coaxial cable feed-line, which radiates stray RF energy B. The RF radiation can be better focused in a direction away from populated areas C. Individuals in the main beam of the radiation pattern will receive a greater exposure than when a low-gain antenna is used 　　　放射パターンの主ビームに入る人には、低ゲインアンテナを使用した時よりも大きな被爆を受ける。 D. All of these choices are correct G0E11 (C) If your station is located in a residential area, which of the following would best help you reduce the RF exposure to your neighbors from your amateur station? 局が住宅地に在る場合、近所へのアマチュア局からのＲＦ被爆を減らす手助けとなる事は？ A. Use RTTY instead of CW or SSB voice emissions B. Use top-quality coaxial cable to reduce RF losses in the feed-line 　　　アンテナの高さを出来るだけ上げて、近隣の人からの距離を最大にする。 C. Install your antenna as high as possible to maximize the distance to nearby people D. Use an antenna matching network to reduce your transmitted SWR G0E12 (A) What could be done to ensure greater RF safety near a ground mounted vertical antenna? 地面に設置した垂直アンテナ付近のＲＦ安全を良くするには？ A. Construct fencing to exclude people from getting too close to the antenna 　　　人間がアンテナに近付き過ぎないように、フェンスを設ける。 B. Avoid transmitter output power levels above 50-watts C. Increase the gain of the antenna D. Add a parasitic element to redirect RF energy away from uncontrolled area *oef