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  1. G1A01XXXNWhat are the frequency limits for General class operators in the 160-meter band?                                                                                                                            1800 - 1900 kHz                                                                                               1900 - 2000 kHz                                                                                                                   1800 - 2000 kHz                                                                                                              1825 - 2000 kHz                                                                                                                   CG1A02XXXNWhat are the frequency limits for General class operators in the 75/80-meter band (ITU Region 2)?                                                                                                           3525 - 3750 kHz and 3850 - 4000 kHz                                                                           3525 - 3775 kHz and 3875 - 4000 kHz                                                                                               3525 - 3750 kHz and 3875 - 4000 kHz                                                                                          3525 - 3775 kHz and 3850 - 4000 kHz                                                                                               AG1A03XXXNWhat are the frequency limits for General class operators in the 40-meter band (ITU Region 2)?                                                                                                              7025 - 7175 kHz and 7200 - 7300 kHz                                                                           7025 - 7175 kHz and 7225 - 7300 kHz                                                                                               7025 - 7150 kHz and 7200 - 7300 kHz                                                                                          7025 - 7150 kHz and 7225 - 7300 kHz                                                                                               DG1A04XXXNWhat are the frequency limits for General class operators in the 30-meter band?                                                                                                                             10100 - 10150 kHz                                                                                             10100 - 10175 kHz                                                                                                                 10125 - 10150 kHz                                                                                                            10125 - 10175 kHz                                                                                                                 AG1A05XXXNWhat are the frequency limits for General class operators in the 20-meter band?                                                                                                                             14025 - 14100 kHz and 14175 - 14350 kHz                                                                       14025 - 14150 kHz and 14225 - 14350 kHz                                                                                           14025 - 14125 kHz and 14200 - 14350 kHz                                                                                      14025 - 14175 kHz and 14250 - 14350 kHz                                                                                           BG1A06XXXNWhat are the frequency limits for General class operators in the 15-meter band?                                                                                                                             21025 - 21200 kHz and 21275 - 21450 kHz                                                                       21025 - 21150 kHz and 21300 - 21450 kHz                                                                                           21025 - 21150 kHz and 21275 - 21450 kHz                                                                                      21025 - 21200 kHz and 21300 - 21450 kHz                                                                                           DG1A07XXXNWhat are the frequency limits for General class operators in the 12-meter band?                                                                                                                             24890 - 24990 kHz                                                                                             24890 - 24975 kHz                                                                                                                 24900 - 24990 kHz                                                                                                            24900 - 24975 kHz                                                                                                                 AG1A08XXXNWhat are the frequency limits for General class operators in the 10-meter band?                                                                                                                             28000 - 29700 kHz                                                                                             28025 - 29700 kHz                                                                                                                 28100 - 29600 kHz                                                                                                            28125 - 29600 kHz                                                                                                                 AG1A09XXXNWhat are the frequency limits within the 160-meter band for phone emissions?                                                                                                                                1800 - 2000 kHz                                                                                               1800 - 1900 kHz                                                                                                                   1825 - 2000 kHz                                                                                                              1825 - 1900 kHz                                                                                                                   AG1A10XXXNWhat are the frequency limits within the 80-meter band in ITU Region 2 for CW emissions?                                                                                                                    3500 - 3750 kHz                                                                                               3700 - 3750 kHz                                                                                                                   3500 - 4000 kHz                                                                                                              3890 - 4000 kHz                                                                                                                   CG1A11XXXNWhat are the frequency limits within the 40-meter band in ITU Region 2 for image emissions?                                                                                                                 7225 - 7300 kHz                                                                                               7000 - 7150 kHz                                                                                                                   7100 - 7150 kHz                                                                                                              7150 - 7300 kHz                                                                                                                   DG1A12XXXNWhat are the frequency limits within the 30-meter band for RTTY emissions?                                                                                                                                  10125 - 10150 kHz                                                                                             10125 - 10140 kHz                                                                                                                 10100 - 10150 kHz                                                                                                            10100 - 10140 kHz                                                                                                                 CG1A13XXXNWhat are the frequency limits within the 20-meter band for image emissions?                                                                                                                                 14025 - 14300 kHz                                                                                             14150 - 14350 kHz                                                                                                                 14025 - 14350 kHz                                                                                                            14150 - 14300 kHz                                                                                                                 BG1A14XXXNWhat are the frequency limits within the 15-meter band for image emissions?                                                                                                                                 21250 - 21300 kHz                                                                                             21150 - 21450 kHz                                                                                                                 21200 - 21450 kHz                                                                                                            21100 - 21300 kHz                                                                                                                 CG1A15XXXNWhat are the frequency limits within the 12-meter band for phone emissions?                                                                                                                                 24890 - 24990 kHz                                                                                             24890 - 24930 kHz                                                                                                                 24930 - 24990 kHz                                                                                                            Phone emissions are not permitted in this band                                                                                    CG1A16XXXNWhat are the frequency limits within the 10-meter band for phone emissions?                                                                                                                                 28000 - 28300 kHz                                                                                             29000 - 29700 kHz                                                                                                                 28300 - 29700 kHz                                                                                                            28000 - 29000 kHz                                                                                                                 CG1A17XXXNAs a General class control operator at a Novice station, how must you identify your station when transmitting on 7250 kHz?                                                                                  With your call sign, followed by the word "controlling" and the Novice call sign                              With the Novice call sign, followed by the slant bar "/" (or any suitable word) and your own call sign                            With your call sign, followed by the slant bar "/" (or any suitable word) and the Novice call sign                           A Novice station should not be operated on 7250 kHz, even with a General control operator                                         BG1A18XXXNUnder what circumstances may a 10-meter repeater retransmit the 2-meter signal from a Technician class operator?                                                                                            Under no circumstances                                                                                        Only if the station on 10 meters is operating under a Special Temporary Authorization allowing such retransmission                Only during an FCC-declared general state of communications emergency                                                        Only if the 10-meter control operator holds at least a General class license                                                      DG1A19XXXNWhat kind of amateur station automatically retransmits the signals of other stations?                                                                                                                       Repeater station                                                                                              Space station                                                                                                                     Telecommand station                                                                                                          Relay station                                                                                                                     AG1A20XXXNWhat name is given to a form of interference that seriously degrades, obstructs or repeatedly interrupts a radiocommunication service?                                                                      Intentional interference                                                                                      Harmful interference                                                                                                              Adjacent interference                                                                                                        Disruptive interference                                                                                                           BG1A21XXXNWhat types of messages may be transmitted by an amateur station to a foreign country for a third party?                                                                                                     Messages for which the amateur operator is paid                                                               Messages facilitating the business affairs of any party                                                                           Messages of a technical nature or remarks of a personal character                                                            No messages may be transmitted to foreign countries for third parties                                                             CG1B01XXXNUp to what height above the ground may you install an antenna structure without needing FCC approval?                                                                                                       50 feet                                                                                                       100 feet                                                                                                                          200 feet                                                                                                                     300 feet                                                                                                                          CG1B02XXXNIf the FCC Rules DO NOT specifically cover a situation, how must you operate your amateur station?                                                                                                          In accordance with general licensee operator principles                                                       In accordance with good engineering and good amateur practice                                                                     In accordance with practices adopted by the Institute of Electrical and Electronics Engineers                                In accordance with procedures set forth by the International Amateur Radio Union                                                  BG1B03XXXNWhich type of station may transmit one-way communications?                                                                                                                                                  Repeater station                                                                                              Beacon station                                                                                                                    HF station                                                                                                                   VHF station                                                                                                                       BG1B04XXXNWhich of the following does NOT need to be true if an amateur station gathers news information for broadcast purposes?                                                                                      The information is more quickly transmitted by amateur radio                                                  The information must involve the immediate safety of life of individuals or the immediate protection of property                  The information must be directly related to the event                                                                        The information cannot be transmitted by other means                                                                              AG1B05XXXNUnder what limited circumstances may  music be transmitted by an amateur station?                                                                                                                           When it produces no dissonances or spurious emissions                                                         When it is used to jam an illegal transmission                                                                                    When it is transmitted on frequencies above 1215 MHz                                                                         When it is an incidental part of a space shuttle retransmission                                                                   DG1B06XXXNWhen may an amateur station in two-way communication transmit a message in a secret code in order to obscure the meaning of the communication?                                                              When transmitting above 450 MHz                                                                               During contests                                                                                                                   Never                                                                                                                        During a declared communications emergency                                                                                        CG1B07XXXNWhat are the restrictions on the use of abbreviations or procedural signals in the amateur service?                                                                                                         There are no restrictions                                                                                     They may be used if they do not obscure the meaning of a message                                                                  They are not permitted because they obscure the meaning of a message to FCC monitoring stations                              Only "10-codes" are permitted                                                                                                     BG1B08XXXNWhen are codes or ciphers permitted in two-way domestic amateur communications?                                                                                                                             Never                                                                                                         During contests                                                                                                                   During nationally declared emergencies                                                                                       On frequencies above 2.3 GHz                                                                                                      AG1B09XXXNWhen are codes or ciphers permitted in two-way international amateur communications?                                                                                                                        Never                                                                                                         During contests                                                                                                                   During internationally declared emergencies                                                                                  On frequencies above 2.3 GHz                                                                                                      AG1B10XXXNWhich of the following amateur transmissions is NOT prohibited by the FCC Rules?                                                                                                                            The playing of music                                                                                          The use of obscene or indecent words                                                                                              False or deceptive messages or signals                                                                                       Retransmission of space shuttle communications                                                                                    DG1B11XXXNWhat should you do to keep your station from retransmitting music or signals from a non-amateur station?                                                                                                    Turn up the volume of your transceiver                                                                        Speak closer to the microphone to increase your signal strength                                                                   Turn down the volume of background audio                                                                                     Adjust your transceiver noise blanker                                                                                             CG1C01XXXNWhat is the maximum transmitting power an amateur station may use on 3690 kHz?                                                                                                                              200 watts PEP output                                                                                          1000 watts PEP output                                                                                                             1500 watts PEP output                                                                                                        2000 watts PEP output                                                                                                             AG1C02XXXNWhat is the maximum transmitting power an amateur station may use on 7080 kHz?                                                                                                                              200 watts PEP output                                                                                          1000 watts PEP output                                                                                                             1500 watts PEP output                                                                                                        2000 watts PEP output                                                                                                             CG1C03XXXNWhat is the maximum transmitting power an amateur station may use on 10.140 MHz?                                                                                                                            200 watts PEP output                                                                                          1000 watts PEP output                                                                                                             1500 watts PEP output                                                                                                        2000 watts PEP output                                                                                                             AG1C04XXXNWhat is the maximum transmitting power an amateur station may use on 21.150 MHz?                                                                                                                            200 watts PEP output                                                                                          1000 watts PEP output                                                                                                             1500 watts PEP output                                                                                                        2000 watts PEP output                                                                                                             AG1C05XXXNWhat is the maximum transmitting power an amateur station may use on 24.950 MHz?                                                                                                                            200 watts PEP output                                                                                          1000 watts PEP output                                                                                                             1500 watts PEP output                                                                                                        2000 watts PEP output                                                                                                             CG1C06XXXNExternal RF power amplifiers designed to operate below what frequency may require FCC type acceptance?                                                                                                      28 MHz                                                                                                        35 MHz                                                                                                                            50 MHz                                                                                                                       144 MHz                                                                                                                           DG1C07XXXNWithout a grant of FCC type acceptance, how many external RF amplifiers of a given design capable of operation below 144 MHz may you build or modify in one calendar year?                                  None                                                                                                          1                                                                                                                                 5                                                                                                                            10                                                                                                                                BG1C08XXXNWhich of the following standards must be met if FCC type acceptance of an external RF amplifier is required?                                                                                                The amplifier must not be able to amplify a 28-MHz signal to more than ten times the input power              The amplifier must not be capable of reaching its designed output power when driven with less than 50 watts                       The amplifier must not be able to be operated for more than ten minutes without a time delay circuit                         The amplifier must not be able to be modified by an amateur operator                                                              BG1C09XXXNWhich of the following would NOT disqualify an external RF power amplifier from being granted FCC type acceptance?                                                                                          The capability of being modified by the operator for use outside the amateur bands                            The capability of achieving full output power when driven with less than 50 watts                                                 The capability of achieving full output power on amateur frequencies between 24 and 35 MHz                                   The capability of being switched by the operator to all amateur frequencies below 24 MHz                                          DG1C10XXXNWhat is the maximum symbol rate permitted for packet emissions below 28 MHz?                                                                                                                                300 bauds                                                                                                     1200 bauds                                                                                                                        19.6 kilobauds                                                                                                               56 kilobauds                                                                                                                      AG1C11XXXNWhat is the maximum symbol rate permitted for RTTY emissions below 28 MHz?                                                                                                                                  56 kilobauds                                                                                                  19.6 kilobauds                                                                                                                    1200 bauds                                                                                                                   300 bauds                                                                                                                         DG1D01XXXNWhat telegraphy examination elements may you prepare if you hold a General class license?                                                                                                                   None                                                                                                          Element 1A only                                                                                                                   Element 1B only                                                                                                              Elements 1A and 1B                                                                                                                BG1D02XXXNWhat written examination elements may you prepare if you hold a General class license?                                                                                                                      None                                                                                                          Element 2 only                                                                                                                    Elements 2 and 3A                                                                                                            Elements 2, 3A and 3B                                                                                                             CG1D03XXXNWhat license examinations may you administer if you hold a General class license?                                                                                                                           None                                                                                                          Novice only                                                                                                                       Novice and Technician                                                                                                        Novice, Technician and General                                                                                                    CG1D04XXXNWhat minimum examination elements must an applicant pass for a Novice license?                                                                                                                              Element 2 only                                                                                                Elements 1A and 2                                                                                                                 Elements 2 and 3A                                                                                                            Elements 1A, 2 and 3A                                                                                                             BG1D05XXXNWhat minimum examination elements must an applicant pass for a Technician license?                                                                                                                          Element 2 only                                                                                                Elements 1A and 2                                                                                                                 Elements 2 and 3A                                                                                                            Elements 1A, 2 and 3A                                                                                                             CG1D06XXXNWhat minimum examination elements must an applicant pass for a Technician license with HF privileges?                                                                                                       Element 2 only                                                                                                Elements 1A and 2                                                                                                                 Elements 2 and 3A                                                                                                            Elements 1A, 2 and 3A                                                                                                             DG1D07XXXNWhat are the requirements for administering Novice examinations?                                                                                                                                            Three VEC-accredited General class or higher VEs must be present                                              Two VEC-accredited General class or higher VEs must be present                                                                    Two General class or higher VEs must be present, but only one need be VEC accredited                                         Any two General class or higher VEs must be present                                                                               AG1D08XXXNWhen may you participate as an administering Volunteer Examiner (VE) for a Novice license examination?                                                                                                      Once you have notified the FCC that you want to give an examination                                           Once you have a Certificate of Successful Completion of Examination (CSCE) for General class                                      Once you have prepared telegraphy and written examinations for the Novice license, or obtained them from a qualified supplierOnce you have received both your FCC-issued General class or higher license in the mail and VEC accreditation                     DG1D09XXXNIf you are a Technician licensee with a Certificate of Successful Completion of Examination (CSCE) for General privileges, how do you identify your station when transmitting on 14.035 MHz?                You must give your call sign and the location of the VE examination where you obtained the CSCE               You must give your call sign, followed by the slant mark "/", followed by the identifier "AG"                                     You may not operate on 14.035 MHz until your new license arrives                                                             No special form of identification is needed                                                                                       BG1D10XXXNIf you are a Technician licensee with a Certificate of Successful Completion of Examination (CSCE) for General privileges, how do you identify your station when transmitting phone emissions on 14.325 MHz?No special form of identification is needed                                                                   You may not operate on 14.325 MHz until your new license arrives                                                                  You must give your call sign, followed by any suitable word that denotes the slant mark and the identifier "AG"              You must give your call sign and the location of the VE examination where you obtained the CSCE                                   CG1D11XXXNIf you are a Technician licensee with a Certificate of Successful Completion of Examination (CSCE) for General privileges, when must you add the special identifier "AG" after your call sign?              Whenever you operate using your new frequency privileges                                                      Whenever you operate                                                                                                              Whenever you operate using Technician frequency privileges                                                                   A special identifier is not required as long as your General class license application has been filed with the FCC                AG2A01XXXNWhich sideband is commonly used for 20-meter phone operation?                                                                                                                                               Upper                                                                                                         Lower                                                                                                                             Amplitude compandored                                                                                                        Double                                                                                                                            AG2A02XXXNWhich sideband is commonly used on 3925-kHz for phone operation?                                                                                                                                            Upper                                                                                                         Lower                                                                                                                             Amplitude compandored                                                                                                        Double                                                                                                                            BG2A03XXXNIn what segment of the 80-meter band do most RTTY transmissions take place?                                                                                                                                 3610 - 3630 kHz                                                                                               3500 - 3525 kHz                                                                                                                   3700 - 3750 kHz                                                                                                              3775 - 3825 kHz                                                                                                                   AG2A04XXXNIn what segment of the 20-meter band do most RTTY transmissions take place?                                                                                                                                 14.000 - 14.050 MHz                                                                                           14.075 - 14.100 MHz                                                                                                               14.150 - 14.225 MHz                                                                                                          14.275 - 14.350 MHz                                                                                                               BG2A05XXXNWhat is the Baudot code?                                                                                                                                                                                    A 7-bit code, with start, stop and parity bits                                                                A 7-bit code in which each character has four mark and three space bits                                                           A 5-bit code, with additional start and stop bits                                                                            A 6-bit code, with additional start, stop and parity bits                                                                         CG2A06XXXNWhat is ASCII?                                                                                                                                                                                              A 7-bit code, with additional start, stop and parity bits                                                     A 7-bit code in which each character has four mark and three space bits                                                           A 5-bit code, with additional start and stop bits                                                                            A 5-bit code in which each character has three mark and two space bits                                                            AG2A07XXXNWhat is the most common frequency shift for RTTY emissions in the amateur HF bands?                                                                                                                         85 Hz                                                                                                         170 Hz                                                                                                                            425 Hz                                                                                                                       850 Hz                                                                                                                            BG2A08XXXNWhat are the two major AMTOR operating modes?                                                                                                                                                               Mode AM and Mode TR                                                                                           Mode A (ARQ) and Mode B (FEC)                                                                                                     Mode C (CRQ) and Mode D (DEC)                                                                                                Mode SELCAL and Mode LISTEN                                                                                                       BG2A09XXXNWhat is the usual input/output frequency separation for a 10-meter station in repeater operation?                                                                                                           100 kHz                                                                                                       600 kHz                                                                                                                           1.6 MHz                                                                                                                      170 Hz                                                                                                                            AG2A10XXXNWhat is the circuit called which causes a transmitter to automatically transmit when an operator speaks into its microphone?                                                                                VXO                                                                                                           VOX                                                                                                                               VCO                                                                                                                          VFO                                                                                                                               BG2A11XXXNWhich of the following describes full break-in telegraphy?                                                                                                                                                  Breaking stations send the Morse code prosign BK                                                              Automatic keyers are used to send Morse code instead of hand keys                                                                 An operator must activate a manual send/receive switch before and after every transmission                                   Incoming signals are received between transmitted key pulses                                                                      DG2B01XXXNIf 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?                                                  Reduce your output power and start the net as usual                                                           Increase your power output so that net participants will be able to hear you over the existing activity                           Cancel the net for that day                                                                                                  Conduct the net on a frequency 3 to 5 kHz away from the regular net frequency                                                     DG2B02XXXNIf a net is about to begin on a frequency which you and another station are using, what should you do?                                                                                                      As a courtesy to the net, move to a different frequency                                                       Increase your power output to ensure that all net participants can hear you                                                       Transmit as long as possible on the frequency so that no other stations may use it                                           Turn off your radio                                                                                                               AG2B03XXXNIf propagation changes during your contact and you notice increasing interference from other activity on the same frequency, what should you do?                                                            Tell the interfering stations to change frequency, since you were there first                                 Report the interference to your local Amateur Auxiliary Coordinator                                                               Turn on your amplifier to overcome the interference                                                                          Move your contact to another frequency                                                                                            DG2B04XXXNWhen selecting a CW transmitting frequency, what minimum frequency separation from a contact in progress should you allow to minimize interference?                                                         5 to 50 Hz                                                                                                    150 to 500 Hz                                                                                                                     1 to 3 kHz                                                                                                                   3 to 6 kHz                                                                                                                        BG2B05XXXNWhen 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?        150 to 500 Hz                                                                                                 Approximately 3 kHz                                                                                                               Approximately 6 kHz                                                                                                          Approximately 10 kHz                                                                                                              BG2B06XXXNWhen selecting a RTTY transmitting frequency, what minimum frequency separation from a contact in progress should you allow (center to center) to minimize interference?                                    60 Hz                                                                                                         250 to 500 Hz                                                                                                                     Approximately 3 kHz                                                                                                          Approximately 6 kHz                                                                                                               BG2B07XXXNWhat is an azimuthal map?                                                                                                                                                                                   A map projection centered on the North Pole                                                                   A map projection centered on a particular location, used to determine the shortest path between points on the surface of the earthA map that shows the angle at which an amateur satellite crosses the equator                                                 A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbitBG2B08XXXNWhat is the most useful type of map to use when orienting a directional HF antenna toward a distant station?                                                                                                Azimuthal                                                                                                     Mercator                                                                                                                          Polar projection                                                                                                             Topographical                                                                                                                     AG2B09XXXNA directional antenna pointed in the long-path direction to another station is generally oriented how many degrees from its short-path heading?                                                             45 degrees                                                                                                    90 degrees                                                                                                                        180 degrees                                                                                                                  270 degrees                                                                                                                       CG2B10XXXNWhat is a band plan?                                                                                                                                                                                        A guideline for using different operating modes within an amateur band                                        A guideline for deviating from FCC amateur frequency band allocations                                                             A plan of operating schedules within an amateur band published by the FCC                                                    A plan devised by a club to best use a frequency band during a contest                                                            AG2B11XXXNIn which International Telecommunication Union Region is the continental United States?                                                                                                                     Region 1                                                                                                      Region 2                                                                                                                          Region 3                                                                                                                     Region 4                                                                                                                          BG2C01XXXNWhat means may an amateur station in distress use to attract attention, make known its condition and location, and obtain assistance?                                                                       Only Morse code signals sent on internationally recognized emergency channels                                 Any means of radiocommunication, but only on internationally recognized emergency channels                                        Any means of radiocommunication                                                                                              Only those means of radiocommunication for which the station is licensed                                                          CG2C02XXXNDuring a disaster in the US, when may an amateur station make transmissions necessary to meet essential communication needs and assist relief operations?                                                   When normal communication systems are overloaded, damaged or disrupted                                        Only when the local RACES net is activated                                                                                        Never; only official emergency stations may transmit in a disaster                                                           When normal communication systems are working but are not convenient                                                              AG2C03XXXNIf a disaster disrupts normal communications in your area, what may the FCC do?                                                                                                                             Declare a temporary state of communication emergency                                                          Temporarily seize your equipment for use in disaster communications                                                               Order all stations across the country to stop transmitting at once                                                           Nothing until the President declares the area a disaster area                                                                     AG2C04XXXNIf a disaster disrupts normal communications in an area, what would the FCC include in any notice of a temporary state of communication emergency?                                                          Any additional test questions needed for the licensing of amateur emergency communications workers            A list of organizations authorized to temporarily seize your equipment for disaster communications                                Any special conditions requiring the use of non-commercial power systems                                                     Any special conditions and special rules to be observed by stations during the emergency                                          DG2C05XXXNDuring an emergency, what power output limitations must be observed by a station in distress?                                                                                                               200 watts PEP                                                                                                 1500 watts PEP                                                                                                                    1000 watts PEP during daylight hours, reduced to 200 watts PEP during the night                                              There are no limitations during an emergency                                                                                      DG2C06XXXNDuring a disaster in the US, what frequencies may be used to obtain assistance?                                                                                                                             Only frequencies in the 80-meter band                                                                         Only frequencies in the 40-meter band                                                                                             Any frequency                                                                                                                Any United Nations approved frequency                                                                                             CG2C07XXXNIf you are communicating with another amateur station and hear a station in distress break in, what should you do?                                                                                          Continue your communication because you were on frequency first                                               Acknowledge the station in distress and determine its location and what assistance may be needed                                  Change to a different frequency so the station in distress may have a clear channel to call for assistance                   Immediately cease all transmissions because stations in distress have emergency rights to the frequency                           BG2C08XXXNWhy do stations in the Radio Amateur Civil Emergency Service (RACES) participate in training tests and drills?                                                                                              To practice orderly and efficient operations for the civil defense organization they serve                    To ensure that members attend monthly on-the-air meetings                                                                         To ensure that RACES members are able to conduct tests and drills                                                            To acquaint members of RACES with other members they may meet in an emergency                                                     AG2C09XXXNWhat type of messages may be transmitted to an amateur station in a foreign country?                                                                                                                        Messages of any type                                                                                          Messages that are not religious, political, or patriotic in nature                                                                Messages of a technical nature or personal remarks of relative unimportance                                                  Messages of any type, but only if the foreign country has a third-party communications agreement with the US                      CG2C10XXXNWhat is the Amateur Auxiliary to the FCC's Field Operations Bureau?                                                                                                                                         Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations                     Amateur volunteers who conduct amateur licensing examinations                                                                     Amateur volunteers who conduct frequency coordination for amateur VHF repeaters                                              Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency                      AG2C11XXXNWhat are the objectives of the Amateur Auxiliary to the FCC's Field Operations Bureau?                                                                                                                      To conduct efficient and orderly amateur licensing examinations                                               To encourage amateur self-regulation and compliance with the rules                                                                To coordinate repeaters for efficient and orderly spectrum usage                                                             To provide emergency and public safety communications                                                                             BG3A01XXXNWhat can be done at an amateur station to continue communications during a sudden ionospheric disturbance?                                                                                                  Try a higher frequency                                                                                        Try the other sideband                                                                                                            Try a different antenna polarization                                                                                         Try a different frequency shift                                                                                                   AG3A02XXXNWhat effect does a sudden ionospheric disturbance have on the daylight ionospheric propagation of HF radio waves?                                                                                           It disrupts higher-latitude paths more than lower-latitude paths                                              It disrupts signals on lower frequencies more than those on higher frequencies                                                    It disrupts communications via satellite more than direct communications                                                     None, only areas on the night side of the earth are affected                                                                      BG3A03XXXNHow long does it take the increased ultraviolet and X-ray radiation from solar flares to affect radio-wave propagation on the earth?                                                                        The effect is instantaneous                                                                                   1.5 seconds                                                                                                                       8 minutes                                                                                                                    20 to 40 hours                                                                                                                    CG3A04XXXNWhat is solar flux?                                                                                                                                                                                         The density of the sun's magnetic field                                                                       The radio energy emitted by the sun                                                                                               The number of sunspots on the side of the sun facing the earth                                                               A measure of the tilt of the earth's ionosphere on the side toward the sun                                                        BG3A05XXXNWhat is the solar-flux index?                                                                                                                                                                               A measure of solar activity that is taken annually                                                            A measure of solar activity that compares daily readings with results from the last six months                                    Another name for the American sunspot number                                                                                 A measure of solar activity that is taken at a specific frequency                                                                 DG3A06XXXNWhat is a geomagnetic disturbance?                                                                                                                                                                          A sudden drop in the solar-flux index                                                                         A shifting of the earth's magnetic pole                                                                                           Ripples in the ionosphere                                                                                                    A dramatic change in the earth's magnetic field over a short period of time                                                       DG3A07XXXNAt which latitudes are propagation paths more sensitive to geomagnetic disturbances?                                                                                                                        Those greater than 45 degrees latitude                                                                        Those between 5 and 45 degrees latitude                                                                                           Those near the equator                                                                                                       All paths are affected equally                                                                                                    AG3A08XXXNWhat can be the effect of a major geomagnetic storm on radio-wave propagation?                                                                                                                              Improved high-latitude HF propagation                                                                         Degraded high-latitude HF propagation                                                                                             Improved ground-wave propagation                                                                                             Improved chances of UHF ducting                                                                                                   BG3A09XXXNWhat influences all radio communication beyond ground-wave or line-of-sight ranges?                                                                                                                         Solar activity                                                                                                Lunar tidal effects                                                                                                               The F1 region of the ionosphere                                                                                              The F2 region of the ionosphere                                                                                                   AG3A10XXXNWhich two types of radiation from the sun influence propagation?                                                                                                                                            Subaudible- and audio-frequency emissions                                                                     Electromagnetic and particle emissions                                                                                            Polar-region and equatorial emissions                                                                                        Infrared and gamma-ray emissions                                                                                                  BG3A11XXXNWhen sunspot numbers are high, how is the ionosphere affected?                                                                                                                                              High-frequency radio signals are absorbed                                                                     Frequencies up to 100 MHz or higher are normally usable for long-distance communication                                           Frequencies up to 40 MHz or higher are normally usable for long-distance communication                                       High-frequency radio signals become weak and distorted                                                                            CG3B01XXXNIf the maximum usable frequency on the path from Minnesota to France is 22 MHz, which band should offer the best chance for a successful contact?                                                           10 meters                                                                                                     15 meters                                                                                                                         20 meters                                                                                                                    40 Meters                                                                                                                         BG3B02XXXNIf the maximum usable frequency on the path from Ohio to Germany is 17 MHz, which band should offer the best chance for a successful contact?                                                               80 meters                                                                                                     40 meters                                                                                                                         20 meters                                                                                                                     2 meters                                                                                                                         CG3B03XXXNIf the maximum usable frequency (MUF) is high and HF radio-wave propagation is generally good for several days, a similar condition can usually be expected how many days later?                            7                                                                                                             14                                                                                                                                28                                                                                                                           90                                                                                                                                CG3B04XXXNWhat 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?                                                    Listen for signals on the 10-meter beacon frequency                                                           Listen for signals on the 20-meter beacon frequency                                                                               Listen for signals on the 39-meter broadcast frequency                                                                       Listen for WWVH time signals on 20 MHz                                                                                            AG3B05XXXNWhat usually happens to radio waves with frequencies below the maximum usable frequency (MUF) when they are sent into the ionosphere?                                                                       They are bent back to the earth                                                                               They pass through the ionosphere                                                                                                  They are completely absorbed by the ionosphere                                                                               They are changed to a frequency above the MUF                                                                                     AG3B06XXXNWhere would you tune to hear beacons that would help you determine propagation conditions on the 20-meter band?                                                                                             28.2 MHz                                                                                                      21.1 MHz                                                                                                                          14.1 MHz                                                                                                                     14.2 MHz                                                                                                                          CG3B07XXXNDuring periods of low solar activity, which frequencies are the least reliable for long-distance communication?                                                                                             Frequencies below 3.5 MHz                                                                                     Frequencies near 3.5 MHz                                                                                                          Frequencies on or above 10 MHz                                                                                               Frequencies above 20 MHz                                                                                                          DG3B08XXXNAt what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?                                                                                        At the summer solstice                                                                                        Only at the maximum point of the solar cycle                                                                                      Only at the minimum point of the solar cycle                                                                                 At any point in the solar cycle                                                                                                   DG3B09XXXNWhat is one characteristic of gray-line propagation?                                                                                                                                                        It is very efficient                                                                                          It improves local communications                                                                                                  It is very poor                                                                                                              It increases D-region absorption                                                                                                  AG3B10XXXNWhat is the maximum distance along the earth's surface that is normally covered in one hop using the F2 region?                                                                                             180 miles                                                                                                     1200 miles                                                                                                                        2500 miles                                                                                                                   None; the F2 region does not support radio-wave propagation                                                                       CG3B11XXXNWhat is the maximum distance along the earth's surface that is normally covered in one hop using the E region?                                                                                              180 miles                                                                                                     1200 miles                                                                                                                        2500 miles                                                                                                                   None; the E region does not support radio-wave propagation                                                                        BG3C01XXXNWhat is the average height of maximum ionization of the E region?                                                                                                                                           45 miles                                                                                                      70 miles                                                                                                                          200 miles                                                                                                                    1200 miles                                                                                                                        BG3C02XXXNWhen can the F2 region be expected to reach its maximum height at your location?                                                                                                                            At noon during the summer                                                                                     At midnight during the summer                                                                                                     At dusk in the spring and fall                                                                                               At noon during the winter                                                                                                         AG3C03XXXNWhy is the F2 region mainly responsible for the longest-distance radio-wave propagation?                                                                                                                    Because it exists only at night                                                                               Because it is the lowest ionospheric region                                                                                       Because it is the highest ionospheric region                                                                                 Because it does not absorb radio waves as much as other ionospheric regions                                                       CG3C04XXXNWhat is the "critical angle" as used in radio-wave propagation?                                                                                                                                             The lowest takeoff angle that will return a radio wave to the earth under specific ionospheric conditions     The compass direction of a distant station                                                                                        The compass direction opposite that of a distant station                                                                     The highest takeoff angle that will return a radio wave to the earth under specific ionospheric conditions                        DG3C05XXXNWhat is the main reason the 160-, 80- and 40-meter amateur bands tend to be useful only for short-distance communications during daylight hours?                                                            Because of a lack of activity                                                                                 Because of auroral propagation                                                                                                    Because of D-region absorption                                                                                               Because of magnetic flux                                                                                                          CG3C06XXXNWhat is a characteristic of HF scatter signals?                                                                                                                                                             High intelligibility                                                                                          A wavering sound                                                                                                                  Reversed modulation                                                                                                          Reversed sidebands                                                                                                                BG3C07XXXNWhat makes HF scatter signals often sound distorted?                                                                                                                                                        Auroral activity and changes in the earth's magnetic field                                                    Propagation through ground waves that absorb much of the signal                                                                   The state of the E-region at the point of refraction                                                                         Energy scattered into the skip zone through several radio-wave paths                                                              DG3C08XXXNWhy are HF scatter signals usually weak?                                                                                                                                                                    Only a small part of the signal energy is scattered into the skip zone                                        Auroral activity absorbs most of the signal energy                                                                                Propagation through ground waves absorbs most of the signal energy                                                           The F region of the ionosphere absorbs most of the signal energy                                                                  AG3C09XXXNWhat 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?                                          Ground wave                                                                                                   Scatter                                                                                                                           Sporadic-E skip                                                                                                              Short-path skip                                                                                                                   BG3C10XXXNWhen does scatter propagation on the HF bands most often occur?                                                                                                                                             When the sunspot cycle is at a minimum and D-region absorption is high                                        At night                                                                                                                          When the F1 and F2 regions are combined                                                                                      When communicating on frequencies above the maximum usable frequency (MUF)                                                        DG3C11XXXNWhat type of signal fading occurs when two or more parts of a radio wave follow different paths?                                                                                                            Multipath interference                                                                                        Multimode interference                                                                                                            Selective Interference                                                                                                       Ionospheric interference                                                                                                          AG4A01XXXNWhat kind of input signal is used to test the amplitude linearity of a single-sideband phone transmitter while viewing the output on an oscilloscope?                                                       Normal speech                                                                                                 An audio-frequency sine wave                                                                                                      Two audio-frequency sine waves                                                                                               An audio-frequency square wave                                                                                                    CG4A02XXXNWhen 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 output observed?                    Two harmonically related tones are fed in, and the output is observed on an oscilloscope                      Two harmonically related tones are fed in, and the output is observed on a distortion analyzer                                    Two non-harmonically related tones are fed in, and the output is observed on an oscilloscope                                 Two non-harmonically related tones are fed in, and the output is observed on a distortion analyzer                                CG4A03XXXNWhat audio frequencies are used in a two-tone test of the linearity of a single-sideband phone transmitter?                                                                                                 20 Hz and 20 kHz tones must be used                                                                           1200 Hz and 2400 Hz tones must be used                                                                                            Any two audio tones may be used, but they must be within the transmitter audio passband, and must be harmonically related    Any two audio tones may be used, but they must be within the transmitter audio passband, and should not be harmonically related   DG4A04XXXNWhat measurement can be made of a single-sideband phone transmitter's amplifier by performing a two-tone test using an oscilloscope?                                                                        Its percent of frequency modulation                                                                           Its percent of carrier phase shift                                                                                                Its frequency deviation                                                                                                      Its linearity                                                                                                                     DG4A05XXXNAt what point in an HF transceiver block diagram would an electronic TR switch normally appear?                                                                                                             Between the transmitter and low-pass filter                                                                   Between the low-pass filter and antenna                                                                                           At the antenna feed point                                                                                                    At the power-supply feed point                                                                                                    AG4A06XXXNWhy is an electronic TR switch preferable to a mechanical one?                                                                                                                                              It allows greater receiver sensitivity                                                                        Its circuitry is simpler                                                                                                          It has a higher operating speed                                                                                              It allows cleaner output signals                                                                                                  CG4A07XXXNAs a power amplifier is tuned, what reading on its grid-current meter indicates the best neutralization?                                                                                                    A minimum change in grid current as the output circuit is changed                                             A maximum change in grid current as the output circuit is changed                                                                 Minimum grid current                                                                                                         Maximum grid current                                                                                                              AG4A08XXXNWhy is neutralization necessary for some vacuum-tube amplifiers?                                                                                                                                            To reduce the limits of loaded Q                                                                              To reduce grid-to-cathode leakage                                                                                                 To cancel AC hum from the filament transformer                                                                               To cancel oscillation caused by the effects of interelectrode capacitance                                                         DG4A09XXXNIn a properly neutralized RF amplifier, what type of feedback is used?                                                                                                                                      5%                                                                                                            10%                                                                                                                               Negative                                                                                                                     Positive                                                                                                                          CG4A10XXXNWhat does a neutralizing circuit do in an RF amplifier?                                                                                                                                                     It controls differential gain                                                                                 It cancels the effects of positive feedback                                                                                       It eliminates AC hum from the power supply                                                                                   It reduces incidental grid modulation                                                                                             BG4A11XXXNWhat is the reason for neutralizing the final amplifier stage of a transmitter?                                                                                                                             To limit the modulation index                                                                                 To eliminate self oscillations                                                                                                    To cut off the final amplifier during standby periods                                                                        To keep the carrier on frequency                                                                                                  BG4B01XXXNWhat item of test equipment contains horizontal- and vertical-channel amplifiers?                                                                                                                           An ohmmeter                                                                                                   A signal generator                                                                                                                An ammeter                                                                                                                   An oscilloscope                                                                                                                   DG4B02XXXNHow would a signal tracer normally be used?                                                                                                                                                                 To identify the source of radio transmissions                                                                 To make exact drawings of signal waveforms                                                                                        To show standing wave patterns on open-wire feed lines                                                                       To identify an inoperative stage in a receiver                                                                                    DG4B03XXXNWhy would you use an antenna noise bridge?                                                                                                                                                                  To measure the noise figure of an antenna or other electrical circuit                                         To measure the impedance of an antenna or other electrical circuit                                                                To cancel electrical noise picked up by an antenna                                                                           To tune out noise in a receiver                                                                                                   BG4B04XXXNHow is an antenna noise bridge normally used?                                                                                                                                                               It is connected at an antenna's feed point and reads the antenna's noise figure                               It is connected between a transmitter and an antenna and is tuned for minimum SWR                                                 It is connected between a receiver and an unknown impedance and is tuned for minimum noise                                   It is connected between an antenna and ground and is tuned for minimum SWR                                                        CG4B05XXXNWhat is the best instrument to use to check the signal quality of a CW or single-sideband phone transmitter?                                                                                                A monitoring oscilloscope                                                                                     A field-strength meter                                                                                                            A sidetone monitor                                                                                                           A signal tracer and an audio amplifier                                                                                            AG4B06XXXNWhat signal source is connected to the vertical input of a monitoring oscilloscope when checking the quality of a transmitted signal?                                                                       The IF output of a monitoring receiver                                                                        The audio input of the transmitter                                                                                                The RF signals of a nearby receiving antenna                                                                                 The RF output of the transmitter                                                                                                  DG4B07XXXNWhat instrument can be used to determine the horizontal radiation pattern of an antenna?                                                                                                                    A field-strength meter                                                                                        A grid-dip meter                                                                                                                  An oscilloscope                                                                                                              A signal tracer and an audio amplifier                                                                                            AG4B08XXXNHow is a field-strength meter normally used?                                                                                                                                                                To determine the standing-wave ratio on a transmission line                                                   To check the output modulation of a transmitter                                                                                   To monitor relative RF output                                                                                                To increase average transmitter output                                                                                            CG4B09XXXNWhat simple instrument may be used to monitor relative RF output during antenna and transmitter adjustments?                                                                                                A field-strength meter                                                                                        An antenna noise bridge                                                                                                           A multimeter                                                                                                                 A metronome                                                                                                                       AG4B10XXXNIf the power output of a transmitter is increased by four times, how might a nearby receiver's S-meter reading change?                                                                                      Decrease by approximately one S unit                                                                          Increase by approximately one S unit                                                                                              Increase by approximately four S units                                                                                       Decrease by approximately four S units                                                                                            BG4B11XXXNBy how many times must the power output of a transmitter be increased to raise the S-meter reading on a nearby receiver from S8 to S9?                                                                      Approximately 2 times                                                                                         Approximately 3 times                                                                                                             Approximately 4 times                                                                                                        Approximately 5 times                                                                                                             CG4C01XXXNWhat devices would you install to reduce or eliminate audio-frequency interference to home-entertainment systems?                                                                                           Bypass inductors                                                                                              Bypass capacitors                                                                                                                 Metal-oxide varistors                                                                                                        Bypass resistors                                                                                                                  BG4C02XXXNWhat should be done if a properly operating amateur station is the cause of interference to a nearby telephone?                                                                                             Make internal adjustments to the telephone equipment                                                          Ask the telephone company to install RFI filters                                                                                  Stop transmitting whenever the telephone is in use                                                                           Ground and shield the local telephone distribution amplifier                                                                      BG4C03XXXNWhat sound is heard from a public-address system if audio rectification of a nearby single-sideband phone transmission occurs?                                                                              A steady hum whenever the transmitter's carrier is on the air                                                 On-and-off humming or clicking                                                                                                    Distorted speech from the transmitter's signals                                                                              Clearly audible speech from the transmitter's signals                                                                             CG4C04XXXNWhat sound is heard from a public-address system if audio rectification of a nearby CW transmission occurs?                                                                                                 On-and-off humming or clicking                                                                                Audible, possibly distorted speech                                                                                                Muffled, severely distorted speech                                                                                           A steady whistling                                                                                                                AG4C05XXXNHow can you minimize the possibility of audio rectification of your transmitter's signals?                                                                                                                  By using a solid-state transmitter                                                                            By using CW emission only                                                                                                         By ensuring that all station equipment is properly grounded                                                                  By installing bypass capacitors on all power supply rectifiers                                                                    CG4C06XXXNIf 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?                               Because the ground rod is not making good contact with moist earth                                            Because the transceiver's heat-sensing circuit is not working to start the cooling fan                                            Because of a bad antenna connection, allowing the RF energy to take an easier path out of the transceiver through you        Because the ground wire is a resonant length on several HF bands and acts more like an antenna than an RF ground connection       DG4C07XXXNWhat is NOT an important reason to have a good station ground?                                                                                                                                              To reduce the cost of operating a station                                                                     To reduce electrical noise                                                                                                        To reduce interference                                                                                                       To reduce the possibility of electric shock                                                                                       AG4C08XXXNWhat is one good way to avoid stray RF energy in your amateur station?                                                                                                                                      Keep the station's ground wire as short as possible                                                           Use a beryllium ground wire for best conductivity                                                                                 Drive the ground rod at least 14 feet into the ground                                                                        Make a couple of loops in the ground wire where it connects to your station                                                       AG4C09XXXNWhich statement about station grounding is NOT true?                                                                                                                                                        Braid from RG-213 coaxial cable makes a good conductor to tie station equipment together into a station groundOnly transceivers and power amplifiers need to be tied into a station ground                                                      According to the National Electrical Code, there should be only one grounding system in a building                           The minimum length for a good ground rod is 8 feet                                                                                BG4C10XXXNWhich statement about station grounding is true?                                                                                                                                                            The chassis of each piece of station equipment should be tied together with high-impedance conductors         If the chassis of all station equipment is connected with a good conductor, there is no need to tie them to an earth ground       RF hot spots can occur in a station located above the ground floor if the equipment is grounded by a long ground wire        A ground loop is an effective way to ground station equipment                                                                     CG4C11XXXNWhich of the following is NOT covered in the National Electrical Code?                                                                                                                                      Minimum conductor sizes for different lengths of amateur antennas                                             The size and composition of grounding conductors                                                                                  Electrical safety inside the ham shack                                                                                       The RF exposure limits of the human body                                                                                          DG4D01XXXNWhat is the reason for using a properly adjusted speech processor with a single-sideband phone transmitter?                                                                                                 It reduces average transmitter power requirements                                                             It reduces unwanted noise pickup from the microphone                                                                              It improves voice frequency fidelity                                                                                         It improves signal intelligibility at the receiver                                                                                DG4D02XXXNIf a single-sideband phone transmitter is 100% modulated, what will a speech processor do to the transmitter's power?                                                                                       It will increase the output PEP                                                                               It will add nothing to the output PEP                                                                                             It will decrease the peak power output                                                                                       It will decrease the average power output                                                                                         BG4D03XXXNHow is the output PEP of a transmitter calculated if an oscilloscope is used to measure the transmitter's peak load voltage across a resistive load?                                                        PEP = [(Vp)(Vp)] / (RL)                                                                                       PEP = [(0.707 PEV)(0.707 PEV)] / RL                                                                                               PEP = (Vp)(Vp)(RL)                                                                                                           PEP = [(1.414 PEV)(1.414 PEV)] / RL                                                                                               BG4D04XXXNWhat 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?                                                  100 watts                                                                                                     200 watts                                                                                                                         400 watts                                                                                                                    1000 watts                                                                                                                        AG4D05XXXNWhat 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?                                                  500 watts                                                                                                     625 watts                                                                                                                         1250 watts                                                                                                                   2500 watts                                                                                                                        BG4D06XXXNWhat is the output PEP of an unmodulated carrier transmitter if an average-reading wattmeter connected to the transmitter output indicates 1060 watts?                                                      530 watts                                                                                                     1060 watts                                                                                                                        1500 watts                                                                                                                   2120 watts                                                                                                                        BG4D07XXXNWhich wires in a four-conductor line cord should be attached to fuses in a 240-VAC primary (single phase) power supply?                                                                                     Only the "hot" (black and red) wires                                                                          Only the "neutral" (white) wire                                                                                                   Only the ground (bare) wire                                                                                                  All wires                                                                                                                         AG4D08XXXNWhat size wire is normally used on a 15-ampere, 120-VAC household lighting circuit?                                                                                                                         AWG number 14                                                                                                 AWG number 16                                                                                                                     AWG number 18                                                                                                                AWG number 22                                                                                                                     AG4D09XXXNWhat size wire is normally used on a 20-ampere, 120-VAC household appliance circuit?                                                                                                                        AWG number 20                                                                                                 AWG number 16                                                                                                                     AWG number 14                                                                                                                AWG number 12                                                                                                                     DG4D10XXXNWhat maximum size fuse or circuit breaker should be used in a household appliance circuit using AWG number 12 wiring?                                                                                       100 amperes                                                                                                   60 amperes                                                                                                                        30 amperes                                                                                                                   20 amperes                                                                                                                        DG4D11XXXNWhat maximum size fuse or circuit breaker should be used in a household appliance circuit using AWG number 14 wiring?                                                                                       15 amperes                                                                                                    20 amperes                                                                                                                        30 amperes                                                                                                                   60 amperes                                                                                                                        AG4E01XXXNDepending 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?                                                             It heats the tissue                                                                                           It causes radiation poisoning                                                                                                     It causes blood flow to stop                                                                                                 It produces genetic changes in the tissue                                                                                         AG4E02XXXNIf you operate your amateur station with indoor antennas, what precautions should you take when you install them?                                                                                           Locate the antennas close to your operating position to minimize feed-line length                             Position the antennas along the edge of a wall where it meets the floor or ceiling to reduce parasitic radiation                  Locate the antennas as far away as possible from living spaces that will be occupied while you are operating                 Position the antennas parallel to electrical power wires to take advantage of parasitic effects                                   CG4E03XXXNWhat precaution should you take whenever you make adjustments to the feed system of a parabolic dish antenna?                                                                                               Be sure no one can activate the transmitter                                                                   Disconnect the antenna-positioning mechanism                                                                                      Point the dish away from the sun so it doesn't concentrate solar energy on you                                               Be sure you and the antenna structure are properly grounded                                                                       AG4E04XXXNWhat is one important thing to consider when using an indoor antenna?                                                                                                                                       Use stranded wire to reduce stray RF                                                                          Ensure that the antenna is as far away from people as possible                                                                    Use only a Yagi antenna to direct the signals away from people                                                               Use as much power as possible to ensure that your signal gets out                                                                 BG4E05XXXNWhy should a protective fence be placed around the base of a ground-mounted parabolic dish transmitting antenna?                                                                                            To reduce the possibility of persons being harmed by RF energy during transmissions                           To reduce the possibility that animals will damage the antenna                                                                    To increase the property value through increased security awareness                                                          To protect the antenna from lightning damage and provide a good ground system for the installation                                AG4E06XXXNWhat RF-safety precautions should you take before beginning repairs on an antenna?                                                                                                                          Be sure you and the antenna structure are grounded                                                            Be sure to turn off the transmitter and disconnect the feed line                                                                  Inform your neighbors so they are aware of your intentions                                                                   Turn off the main power switch in your house                                                                                      BG4E07XXXNWhat precaution should you take when installing a ground-mounted antenna?                                                                                                                                   It should not be installed higher than you can reach                                                          It should not be installed in a wet area                                                                                          It should be painted so people or animals do not accidentally run into it                                                    It should be installed so no one can come in contact with it                                                                      DG4E08XXXNWhat precautions should you take before beginning repairs on a microwave feed horn or waveguide?                                                                                                            Be sure to wear tight-fitting clothes and gloves to protect your body and hands from sharp edges              Be sure the transmitter is turned off and the power source is disconnected                                                        Be sure the weather is dry and sunny                                                                                         Be sure propagation conditions are unfavorable for tropospheric ducting                                                           BG4E09XXXNWhy should directional high-gain antennas be mounted higher than nearby structures?                                                                                                                         So they will be dried by the wind after a heavy rain storm                                                    So they will not damage nearby structures with RF energy                                                                          So they will receive more sky waves and fewer ground waves                                                                   So they will not direct RF energy toward people in nearby structures                                                              DG4E10XXXNFor best RF safety, where should the ends and center of a dipole antenna be located?                                                                                                                        Near or over moist ground so RF energy will be radiated away from the ground                                  As close to the transmitter as possible so RF energy will be concentrated near the transmitter                                    As high as possible to prevent people from coming in contact with the antenna                                                Close to the ground so simple adjustments can be easily made without climbing a ladder                                            CG4E11XXXNWhich property of RF energy is NOT important in estimating the energy's effect on body tissue?                                                                                                              The polarization                                                                                              The critical angle                                                                                                                The power density                                                                                                            The frequency                                                                                                                     BG5A01XXXNWhat is impedance?                                                                                                                                                                                          The electric charge stored by a capacitor                                                                     The opposition to the flow of AC in a circuit containing only capacitance                                                         The opposition to the flow of AC in a circuit                                                                                The force of repulsion between one electric field and another with the same charge                                                CG5A02XXXNWhat is reactance?                                                                                                                                                                                          Opposition to DC caused by resistors                                                                          Opposition to AC caused by inductors and capacitors                                                                               A property of ideal resistors in AC circuits                                                                                 A large spark produced at switch contacts when an inductor is de-energized                                                        BG5A03XXXNIn an inductor, what causes opposition to the flow of AC?                                                                                                                                                   Resistance                                                                                                    Reluctance                                                                                                                        Admittance                                                                                                                   Reactance                                                                                                                         DG5A04XXXNIn a capacitor, what causes opposition to the flow of AC?                                                                                                                                                   Resistance                                                                                                    Reluctance                                                                                                                        Reactance                                                                                                                    Admittance                                                                                                                        CG5A05XXXNHow does a coil react to AC?                                                                                                                                                                                As the frequency of the applied AC increases, the reactance decreases                                         As the amplitude of the applied AC increases, the reactance increases                                                             As the amplitude of the applied AC increases, the reactance decreases                                                        As the frequency of the applied AC increases, the reactance increases                                                             DG5A06XXXNHow does a capacitor react to AC?                                                                                                                                                                           As the frequency of the applied AC increases, the reactance decreases                                         As the frequency of the applied AC increases, the reactance increases                                                             As the amplitude of the applied AC increases, the reactance increases                                                        As the amplitude of the applied AC increases, the reactance decreases                                                             AG5A07XXXNWhen will a power source deliver maximum output to the load?                                                                                                                                                When the impedance of the load is equal to the impedance of the source                                        When the load resistance is infinite                                                                                              When the power-supply fuse rating equals the primary winding current                                                         When air wound transformers are used instead of iron-core transformers                                                            AG5A08XXXNWhat happens when the impedance of an electrical load is equal to the internal impedance of the power source?                                                                                               The source delivers minimum power to the load                                                                 The electrical load is shorted                                                                                                    No current can flow through the circuit                                                                                      The source delivers maximum power to the load                                                                                     DG5A09XXXNWhy is impedance matching important?                                                                                                                                                                        So the source can deliver maximum power to the load                                                           So the load will draw minimum power from the source                                                                               To ensure that there is less resistance than reactance in the circuit                                                        To ensure that the resistance and reactance in the circuit are equal                                                              AG5A10XXXNWhat unit is used to measure reactance?                                                                                                                                                                     Mho                                                                                                           Ohm                                                                                                                               Ampere                                                                                                                       Siemens                                                                                                                           BG5A11XXXNWhat unit is used to measure impedance?                                                                                                                                                                     Volt                                                                                                          Ohm                                                                                                                               Ampere                                                                                                                       Watt                                                                                                                              BG5B01XXXNA two-times increase in power results in a change of how many dB?                                                                                                                                           1 dB higher                                                                                                   3 dB higher                                                                                                                       6 dB higher                                                                                                                  12 dB higher                                                                                                                      BG5B02XXXNHow can you decrease your transmitter's power by 3 dB?                                                                                                                                                      Divide the original power by 1.5                                                                              Divide the original power by 2                                                                                                    Divide the original power by 3                                                                                               Divide the original power by 4                                                                                                    BG5B03XXXNHow can you increase your transmitter's power by 6 dB?                                                                                                                                                      Multiply the original power by 1.5                                                                            Multiply the original power by 2                                                                                                  Multiply the original power by 3                                                                                             Multiply the original power by 4                                                                                                  DG5B04XXXNIf a signal-strength report is "10 dB over S9", what should the report be if the transmitter power is reduced from 1500 watts to 150 watts?                                                                 S5                                                                                                            S7                                                                                                                                S9                                                                                                                           S9 plus 5 dB                                                                                                                      CG5B05XXXNIf a signal-strength report is "20 dB over S9", what should the report be if the transmitter power is reduced from 1500 watts to 15 watts?                                                                  S5                                                                                                            S7                                                                                                                                S9                                                                                                                           S9 plus 10 dB                                                                                                                     CG5B06XXXNIf a 1.0-ampere current source is connected to two parallel-connected 10-ohm resistors, how much current passes through each resistor?                                                                      10 amperes                                                                                                    2 amperes                                                                                                                         1 ampere                                                                                                                     0.5 ampere                                                                                                                        DG5B07XXXNIn a parallel circuit with a voltage source and several branch resistors, how is the total current related to the current in the branch resistors?                                                          It equals the average of the branch current through each resistor                                             It equals the sum of the branch current through each resistor                                                                     It decreases as more parallel resistors are added to the circuit                                                             It is the sum of each resistor's voltage drop multiplied by the total number of resistors                                         BG5B08XXXNHow many watts of electrical power are used if 400 VDC is supplied to an 800-ohm load?                                                                                                                      0.5 watts                                                                                                     200 watts                                                                                                                         400 watts                                                                                                                    320,000 watts                                                                                                                     BG5B09XXXNHow many watts of electrical power are used by a 12-VDC light bulb that draws 0.2 amperes?                                                                                                                  60 watts                                                                                                      24 watts                                                                                                                          6 watts                                                                                                                      2.4 watts                                                                                                                         DG5B10XXXNHow many watts are being dissipated when 7.0 milliamperes flow through 1.25 kilohms?                                                                                                                        Approximately 61 milliwatts                                                                                   Approximately 39 milliwatts                                                                                                       Approximately 11 milliwatts                                                                                                  Approximately 9 milliwatts                                                                                                        AG5B11XXXNWhat is the voltage across a 500-turn secondary winding in a transformer if the 2250-turn primary is connected to 120 VAC?                                                                                  2370 volts                                                                                                    540 volts                                                                                                                         26.7 volts                                                                                                                   5.9 volts                                                                                                                         CG5B12XXXNWhat 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?                                                               12.2 to 1                                                                                                     24.4 to 1                                                                                                                         150 to 1                                                                                                                     300 to 1                                                                                                                          AG5B13XXXNWhat is the impedance of a speaker that requires a transformer with a turns ratio of 24 to 1 to match an audio amplifier having an output impedance of 2000 ohms?                                           576 ohms                                                                                                      83.3 ohms                                                                                                                         7.0 ohms                                                                                                                     3.5 ohms                                                                                                                          DG5B14XXXNA 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?                                                                 The peak-to-peak value                                                                                        The RMS value                                                                                                                     The average value                                                                                                            The peak value                                                                                                                    BG5B15XXXNWhat is the peak-to-peak voltage of a sine wave that has an RMS voltage of 120 volts?                                                                                                                       84.8 volts                                                                                                    169.7 volts                                                                                                                       204.8 volts                                                                                                                  339.4 volts                                                                                                                       DG5B16XXXNA sine wave of 17 volts peak is equivalent to how many volts RMS?                                                                                                                                           8.5 volts                                                                                                     12 volts                                                                                                                          24 volts                                                                                                                     34 volts                                                                                                                          BG6A01XXXNIf a carbon resistor's temperature is increased, what will happen to the resistance?                                                                                                                        It will increase by 20% for every 10 degrees centigrade                                                       It will stay the same                                                                                                             It will change depending on the resistor's temperature coefficient rating                                                    It will become time dependent                                                                                                     CG6A02XXXNWhat type of capacitor is often used in power-supply circuits to filter the rectified AC?                                                                                                                   Disc ceramic                                                                                                  Vacuum variable                                                                                                                   Mica                                                                                                                         Electrolytic                                                                                                                      DG6A03XXXNWhat type of capacitor is used in power-supply circuits to filter transient voltage spikes across the transformer's secondary winding?                                                                      High-value                                                                                                    Trimmer                                                                                                                           Vacuum variable                                                                                                              Suppressor                                                                                                                        DG6A04XXXNWhere is the source of energy connected in a transformer?                                                                                                                                                   To the secondary winding                                                                                      To the primary winding                                                                                                            To the core                                                                                                                  To the plates                                                                                                                     BG6A05XXXNIf no load is attached to the secondary winding of a transformer, what is current in the primary winding called?                                                                                            Magnetizing current                                                                                           Direct current                                                                                                                    Excitation current                                                                                                           Stabilizing current                                                                                                               AG6A06XXXNWhat is the peak-inverse-voltage rating of a power-supply rectifier?                                                                                                                                        The maximum transient voltage the rectifier will handle in the conducting direction                           1.4 times the AC frequency                                                                                                        The maximum voltage the rectifier will handle in the non-conducting direction                                                2.8 times the AC frequency                                                                                                        CG6A07XXXNWhat are the two major ratings that must not be exceeded for silicon-diode rectifiers used in power-supply circuits?                                                                                        Peak inverse voltage; average forward current                                                                 Average power; average voltage                                                                                                    Capacitive reactance; avalanche voltage                                                                                      Peak load impedance; peak voltage                                                                                                 AG6A08XXXNWhy should a resistor and capacitor be wired in parallel with power-supply rectifier diodes?                                                                                                                To equalize voltage drops and guard against transient voltage spikes                                          To ensure that the current through each diode is about the same                                                                   To smooth the output waveform                                                                                                To decrease the output voltage                                                                                                    AG6A09XXXNWhat is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?                                                                                                             A series of pulses at twice the frequency of the AC input                                                     A series of pulses at the same frequency as the AC input                                                                          A sine wave at half the frequency of the AC input                                                                            A steady DC voltage                                                                                                               AG6A10XXXNA half-wave rectifier conducts during how many degrees of each cycle?                                                                                                                                       90 degrees                                                                                                    180 degrees                                                                                                                       270 degrees                                                                                                                  360 degrees                                                                                                                       BG6A11XXXNA full-wave rectifier conducts during how many degrees of each cycle?                                                                                                                                       90 degrees                                                                                                    180 degrees                                                                                                                       270 degrees                                                                                                                  360 degrees                                                                                                                       DG7A01XXXNWhat safety feature does a power-supply bleeder resistor provide?                                                                                                                                           It improves voltage regulation                                                                                It discharges the filter capacitors                                                                                               It removes shock hazards from the induction coils                                                                            It eliminates ground-loop current                                                                                                 BG7A02XXXNWhere is a power-supply bleeder resistor connected?                                                                                                                                                         Across the filter capacitor                                                                                   Across the power-supply input                                                                                                     Between the transformer primary and secondary windings                                                                       Across the inductor in the output filter                                                                                          AG7A03XXXNWhat components are used in a power-supply filter network?                                                                                                                                                  Diodes                                                                                                        Transformers and transistors                                                                                                      Quartz crystals                                                                                                              Capacitors and inductors                                                                                                          DG7A04XXXNWhat should be the peak-inverse-voltage rating of the rectifier in a full-wave power supply?                                                                                                                One-quarter the normal output voltage of the power supply                                                     Half the normal output voltage of the power supply                                                                                Equal to the normal output voltage of the power supply                                                                       Double the normal peak output voltage of the power supply                                                                         DG7A05XXXNWhat should be the peak-inverse-voltage rating of the rectifier in a half-wave power supply?                                                                                                                One-quarter to one-half the normal peak output voltage of the power supply                                    Half the normal output voltage of the power supply                                                                                Equal to the normal output voltage of the power supply                                                                       One to two times the normal peak output voltage of the power supply                                                               DG7A06XXXNWhat should be the impedance of a low-pass filter as compared to the impedance of the transmission line into which it is inserted?                                                                          Substantially higher                                                                                          About the same                                                                                                                    Substantially lower                                                                                                          Twice the transmission line impedance                                                                                             BG7A07XXXNIn a typical single-sideband phone transmitter, what circuit processes signals from the balanced modulator and sends signals to the mixer?                                                                  Carrier oscillator                                                                                            Filter                                                                                                                            IF amplifier                                                                                                                 RF amplifier                                                                                                                      BG7A08XXXNIn a single-sideband phone transmitter, what circuit processes signals from the carrier oscillator and the speech amplifier and sends signals to the filter?                                                Mixer                                                                                                         Detector                                                                                                                          IF amplifier                                                                                                                 Balanced modulator                                                                                                                DG7A09XXXNIn 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?                                      Balanced modulator                                                                                            IF amplifier                                                                                                                      Mixer                                                                                                                        Detector                                                                                                                          CG7A10XXXNIn a single-sideband phone superheterodyne receiver, what circuit processes signals from the IF amplifier and the BFO and sends signals to the AF amplifier?                                                RF oscillator                                                                                                 IF filter                                                                                                                         Balanced modulator                                                                                                           Detector                                                                                                                          DG7A11XXXNIn a single-sideband phone superheterodyne receiver, what circuit processes signals from the IF filter and sends signals to the detector?                                                                   RF oscillator                                                                                                 IF amplifier                                                                                                                      Mixer                                                                                                                        BFO                                                                                                                               BG8A01XXXNWhat type of modulation system changes the amplitude of an RF wave for the purpose of conveying information?                                                                                                Frequency modulation                                                                                          Phase modulation                                                                                                                  Amplitude-rectification modulation                                                                                           Amplitude modulation                                                                                                              DG8A02XXXNWhat type of modulation system changes the phase of an RF wave for the purpose of conveying information?                                                                                                    Pulse modulation                                                                                              Phase modulation                                                                                                                  Phase-rectification modulation                                                                                               Amplitude modulation                                                                                                              BG8A03XXXNWhat type of modulation system changes the frequency of an RF wave for the purpose of conveying information?                                                                                                Phase-rectification modulation                                                                                Frequency-rectification modulation                                                                                                Amplitude modulation                                                                                                         Frequency modulation                                                                                                              DG8A04XXXNWhat emission is produced by a reactance modulator connected to an RF power amplifier?                                                                                                                      Multiplex modulation                                                                                          Phase modulation                                                                                                                  Amplitude modulation                                                                                                         Pulse modulation                                                                                                                  BG8A05XXXNwhat emission type does the instantaneous amplitude (envelope) of the RF signal vary in accordance with the modulating audio?                                                                               Frequency shift keying                                                                                        Pulse modulation                                                                                                                  Frequency modulation                                                                                                         Amplitude modulation                                                                                                              DG8A06XXXNHow much is the carrier suppressed below peak output power in a single-sideband phone transmission?                                                                                                         No more than 20 dB                                                                                            No more than 30 dB                                                                                                                At least 40 dB                                                                                                               At least 60 dB                                                                                                                    CG8A07XXXNWhat is one advantage of carrier suppression in a double-sideband phone transmission?                                                                                                                       Only half the bandwidth is required for the same information content                                          Greater modulation percentage is obtainable with lower distortion                                                                 More power can be put into the sidebands                                                                                     Simpler equipment can be used to receive a double-sideband suppressed-carrier signal                                              CG8A08XXXNWhich popular phone emission uses the narrowest frequency bandwidth?                                                                                                                                        Single-sideband                                                                                               Double-sideband                                                                                                                   Phase-modulated                                                                                                              Frequency-modulated                                                                                                               AG8A09XXXNWhat happens to the signal of an overmodulated single-sideband or double-sideband phone transmitter?                                                                                                        It becomes louder with no other effects                                                                       It occupies less bandwidth with poor high-frequency response                                                                      It has higher fidelity and improved signal-to-noise ratio                                                                    It becomes distorted and occupies more bandwidth                                                                                  DG8A10XXXNHow should the microphone gain control be adjusted on a single-sideband phone transmitter?                                                                                                                  For full deflection of the ALC meter on modulation peaks                                                      For slight movement of the ALC meter on modulation peaks                                                                          For 100% frequency deviation on modulation peaks                                                                             For a dip in plate current                                                                                                        BG8A11XXXNWhat is meant by flattopping in a single-sideband phone transmission?                                                                                                                                       Signal distortion caused by insufficient collector current                                                    The transmitter's automatic level control is properly adjusted                                                                    Signal distortion caused by excessive drive                                                                                  The transmitter's carrier is properly suppressed                                                                                  CG8B01XXXNWhat 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?                                                          Mixer                                                                                                         BFO                                                                                                                               VFO                                                                                                                          Multiplier                                                                                                                        AG8B02XXXNIf 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? Local oscillator                                                                                              Image response                                                                                                                    Mixer interference                                                                                                           Intermediate interference                                                                                                         BG8B03XXXNWhat stage in a transmitter would change a 5.3-MHz input signal to 14.3 MHz?                                                                                                                                A mixer                                                                                                       A beat frequency oscillator                                                                                                       A frequency multiplier                                                                                                       A linear translator                                                                                                               AG8B04XXXNWhat 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?                                                                     Mixer                                                                                                         Reactance modulator                                                                                                               Preemphasis network                                                                                                          Multiplier                                                                                                                        DG8B05XXXNWhy isn't frequency modulated (FM) phone used below 29.5 MHz?                                                                                                                                               The transmitter efficiency for this mode is low                                                               Harmonics could not be attenuated to practical levels                                                                             The bandwidth would exceed FCC limits                                                                                        The frequency stability would not be adequate                                                                                     CG8B06XXXNWhat is the total bandwidth of an FM-phone transmission having a 5-kHz deviation and a 3-kHz modulating frequency?                                                                                          3 kHz                                                                                                         5 kHz                                                                                                                             8 kHz                                                                                                                        16 kHz                                                                                                                            DG8B07XXXNWhat is the frequency deviation for a 12.21-MHz reactance-modulated oscillator in a 5-kHz deviation, 146.52-MHz FM-phone transmitter?                                                                       41.67 Hz                                                                                                      416.7 Hz                                                                                                                          5 kHz                                                                                                                        12 kHz                                                                                                                            BG8B08XXXNHow is frequency shift related to keying speed in an FSK signal?                                                                                                                                            The frequency shift in hertz must be at least four times the keying speed in WPM                              The frequency shift must not exceed 15 Hz per WPM of keying speed                                                                 Greater keying speeds require greater frequency shifts                                                                       Greater keying speeds require smaller frequency shifts                                                                            CG8B09XXXNWhat do RTTY, Morse code, AMTOR and packet communications have in common?                                                                                                                                   They are multipath communications                                                                             They are digital communications                                                                                                   They are analog communications                                                                                               They are only for emergency communications                                                                                        BG8B10XXXNWhat is the duty cycle required of a transmitter when sending Mode B (FEC) AMTOR?                                                                                                                           50%                                                                                                           75%                                                                                                                               100%                                                                                                                         125%                                                                                                                              CG8B11XXXNIn what segment of the 20-meter band are most AMTOR operations found?                                                                                                                                       At the bottom of the slow-scan TV segment, near 14.230 MHz                                                    At the top of the SSB phone segment, near 14.325 MHz                                                                              In the middle of the CW segment, near 14.100 MHz                                                                             At the bottom of the RTTY segment, near 14.075 MHz                                                                                DG9A01XXXNHow can the SWR bandwidth of a parasitic beam antenna be increased?                                                                                                                                         Use larger diameter elements                                                                                  Use closer element spacing                                                                                                        Use traps on the elements                                                                                                    Use tapered-diameter elements                                                                                                     AG9A02XXXNApproximately how long is the driven element of a Yagi antenna for 14.0 MHz?                                                                                                                                17 feet                                                                                                       33 feet                                                                                                                           35 feet                                                                                                                      66 feet                                                                                                                           BG9A03XXXNApproximately how long is the director element of a Yagi antenna for 21.1 MHz?                                                                                                                              42 feet                                                                                                       21 feet                                                                                                                           17 feet                                                                                                                      10.5 feet                                                                                                                         BG9A04XXXNApproximately how long is the reflector element of a Yagi antenna for 28.1 MHz?                                                                                                                             8.75 feet                                                                                                     16.6 feet                                                                                                                         17.5 feet                                                                                                                    35 feet                                                                                                                           CG9A05XXXNWhich statement about a three-element Yagi antenna is true?                                                                                                                                                 The reflector is normally the shortest parasitic element                                                      The director is normally the shortest parasitic element                                                                           The driven element is the longest parasitic element                                                                          Low feed-point impedance increases bandwidth                                                                                      BG9A06XXXNWhat is one effect of increasing the boom length and adding directors to a Yagi antenna?                                                                                                                    Gain increases                                                                                                SWR increases                                                                                                                     Weight decreases                                                                                                             Windload decreases                                                                                                                AG9A07XXXNWhat are some advantages of a Yagi with wide element spacing?                                                                                                                                               High gain, lower loss and a low SWR                                                                           High front-to-back ratio and lower input resistance                                                                               Shorter boom length, lower weight and wind resistance                                                                        High gain, less critical tuning and wider bandwidth                                                                               DG9A08XXXNWhy is a Yagi antenna often used for radio communications on the 20-meter band?                                                                                                                             It provides excellent omnidirectional coverage in the horizontal plane                                        It is smaller, less expensive and easier to erect than a dipole or vertical antenna                                               It helps reduce interference from other stations off to the side or behind                                                   It provides the highest possible angle of radiation for the HF bands                                                              CG9A09XXXNWhat does "antenna front-to-back ratio" mean in reference to a Yagi antenna?                                                                                                                                The number of directors versus the number of reflectors                                                       The relative position of the driven element with respect to the reflectors and directors                                          The power radiated in the major radiation lobe compared to the power radiated in exactly the opposite direction              The power radiated in the major radiation lobe compared to the power radiated 90 degrees away from that direction                 CG9A10XXXNWhat is the "main lobe" of a Yagi antenna radiation pattern?                                                                                                                                                The direction of least radiation from the antenna                                                             The point of maximum current in a radiating antenna element                                                                       The direction of maximum radiated field strength from the antenna                                                            The maximum voltage standing wave point on a radiating element                                                                    CG9A11XXXNWhat is a good way to get maximum performance from a Yagi antenna?                                                                                                                                          Optimize the lengths and spacing of the elements                                                              Use RG-58 feed line                                                                                                               Use a reactance bridge to measure the antenna performance from each direction around the antenna                             Avoid using towers higher than 30 feet above the ground                                                                           AG9B01XXXNApproximately how long is each side of a cubical-quad antenna driven element for 21.4 MHz?                                                                                                                  1.17 feet                                                                                                     11.7 feet                                                                                                                         47 feet                                                                                                                      469 feet                                                                                                                          BG9B02XXXNApproximately how long is each side of a cubical-quad antenna driven element for 14.3 MHz?                                                                                                                  17.6 feet                                                                                                     23.4 feet                                                                                                                         70.3 feet                                                                                                                    175 feet                                                                                                                          AG9B03XXXNApproximately how long is each side of a cubical-quad antenna reflector element for 29.6 MHz?                                                                                                               8.23 feet                                                                                                     8.7 feet                                                                                                                          9.7 feet                                                                                                                     34.8 feet                                                                                                                         BG9B04XXXNApproximately how long is each leg of a symmetrical delta-loop antenna driven element for 28.7 MHz?                                                                                                         8.75 feet                                                                                                     11.7 feet                                                                                                                         23.4 feet                                                                                                                    35 feet                                                                                                                           BG9B05XXXNApproximately how long is each leg of a symmetrical delta-loop antenna driven element for 24.9 MHz?                                                                                                         10.99 feet                                                                                                    12.95 feet                                                                                                                        13.45 feet                                                                                                                   40.36 feet                                                                                                                        CG9B06XXXNApproximately how long is each leg of a symmetrical delta-loop antenna reflector element for 14.1 MHz?                                                                                                      18.26 feet                                                                                                    23.76 feet                                                                                                                        24.35 feet                                                                                                                   73.05 feet                                                                                                                        CG9B07XXXNWhich statement about two-element delta loops and quad antennas is true?                                                                                                                                    They compare favorably with a three-element Yagi                                                              They perform poorly above HF                                                                                                      They perform very well only at HF                                                                                            They are effective only when constructed using insulated wire                                                                     AG9B08XXXNCompared to a dipole antenna, what are the directional radiation characteristics of a cubical-quad antenna?                                                                                                 The quad has more directivity in the horizontal plane but less directivity in the vertical plane              The quad has less directivity in the horizontal plane but more directivity in the vertical plane                                  The quad has more directivity in both horizontal and vertical planes                                                         The quad has less directivity in both horizontal and vertical planes                                                              CG9B09XXXNMoving 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?                                                        It will significantly increase the antenna feed-point impedance                                               It will significantly decrease the antenna feed-point impedance                                                                   It will change the antenna polarization from vertical to horizontal                                                          It will change the antenna polarization from horizontal to vertical                                                               DG9B10XXXNWhat does the term "antenna front-to-back ratio" mean in reference to a delta-loop antenna?                                                                                                                 The number of directors versus the number of reflectors                                                       The relative position of the driven element with respect to the reflectors and directors                                          The power radiated in the major radiation lobe compared to the power radiated in exactly the opposite direction              The power radiated in the major radiation lobe compared to the power radiated 90 degrees away from that direction                 CG9B11XXXNWhat is the "main lobe" of a delta-loop antenna radiation pattern?                                                                                                                                          The direction of least radiation from an antenna                                                              The point of maximum current in a radiating antenna element                                                                       The direction of maximum radiated field strength from the antenna                                                            The maximum voltage standing wave point on a radiating element                                                                    CG9C01XXXNWhat type of multiband transmitting antenna does NOT require a feed line?                                                                                                                                   A random-wire antenna                                                                                         A triband Yagi antenna                                                                                                            A delta-loop antenna                                                                                                         A Beverage antenna                                                                                                                AG9C02XXXNWhat is one advantage of using a random-wire antenna?                                                                                                                                                       It is more efficient than any other kind of antenna                                                           It will keep RF energy out of your station                                                                                        It doesn't need an impedance matching network                                                                                It is a multiband antenna                                                                                                         DG9C03XXXNWhat is one disadvantage of a random-wire antenna?                                                                                                                                                          It must be longer than 1 wavelength                                                                           You may experience RF feedback in your station                                                                                    It usually produces vertically polarized radiation                                                                           You must use an inverted-T matching network for multiband operation                                                               BG9C04XXXNWhat is an advantage of downward sloping radials on a ground-plane antenna?                                                                                                                                 It lowers the radiation angle                                                                                 It brings the feed-point impedance closer to 300 ohms                                                                             It increases the radiation angle                                                                                             It brings the feed-point impedance closer to 50 ohms                                                                              DG9C05XXXNWhat happens to the feed-point impedance of a ground-plane antenna when its radials are changed from horizontal to downward- sloping?                                                                       It decreases                                                                                                  It increases                                                                                                                      It stays the same                                                                                                            It approaches zero                                                                                                                BG9C06XXXNWhat is the low-angle radiation pattern of an ideal half-wavelength dipole HF antenna installed parallel to the earth?                                                                                      It is a figure-eight at right angles to the antenna                                                           It is a figure-eight off both ends of the antenna                                                                                 It is a circle (equal radiation in all directions)                                                                           It is two smaller lobes on one side of the antenna, and one larger lobe on the other side                                         AG9C07XXXNHow does antenna height affect the horizontal (azimuthal) radiation pattern of a horizontal dipole HF antenna?                                                                                              If the antenna is too high, the pattern becomes unpredictable                                                 If the antenna is less than one-half wavelength high, reflected radio waves from the ground significantly distort the pattern     Antenna height has no effect on the pattern                                                                                  If the antenna is less than one-half wavelength high, radiation off the ends of the wire is eliminated                            BG9C08XXXNIf a slightly shorter parasitic element is placed 0.1 wavelength away from an HF dipole antenna, what effect will this have on the antenna's radiation pattern?                                             The radiation pattern will not be affected                                                                    A major lobe will develop in the horizontal plane, parallel to the two elements                                                   A major lobe will develop in the vertical plane, away from the ground                                                        A major lobe will develop in the horizontal plane, toward the parasitic element                                                   DG9C09XXXNIf a slightly longer parasitic element is placed 0.1 wavelength away from an HF dipole antenna, what effect will this have on the antenna's radiation pattern?                                              The radiation pattern will not be affected                                                                    A major lobe will develop in the horizontal plane, away from the parasitic element, toward the dipole                             A major lobe will develop in the vertical plane, away from the ground                                                        A major lobe will develop in the horizontal plane, parallel to the two elements                                                   BG9C10XXXNWhere should the radial wires of a ground-mounted vertical antenna system be placed?                                                                                                                        As high as possible above the ground                                                                          On the surface or buried a few inches below the ground                                                                            Parallel to the antenna element                                                                                              At the top of the antenna                                                                                                         BG9D01XXXNWhat factors determine the characteristic impedance of a parallel-conductor antenna feed line?                                                                                                              The distance between the centers of the conductors and the radius of the conductors                           The distance between the centers of the conductors and the length of the line                                                     The radius of the conductors and the frequency of the signal                                                                 The frequency of the signal and the length of the line                                                                            AG9D02XXXNWhat is the typical characteristic impedance of coaxial cables used for antenna feed lines at amateur stations?                                                                                             25 and 30 ohms                                                                                                50 and 75 ohms                                                                                                                    80 and 100 ohms                                                                                                              500 and 750 ohms                                                                                                                  BG9D03XXXNWhat is the characteristic impedance of flat-ribbon TV-type twinlead?                                                                                                                                       50 ohms                                                                                                       75 ohms                                                                                                                           100 ohms                                                                                                                     300 ohms                                                                                                                          DG9D04XXXNWhat is the typical cause of power being reflected back down an antenna feed line?                                                                                                                          Operating an antenna at its resonant frequency                                                                Using more transmitter power than the antenna can handle                                                                          A difference between feed-line impedance and antenna feed-point impedance                                                    Feeding the antenna with unbalanced feed line                                                                                     CG9D05XXXNWhat must be done to prevent standing waves of voltage and current on an antenna feed line?                                                                                                                 The antenna feed point must be at DC ground potential                                                         The feed line must be cut to an odd number of electrical quarter-wavelengths long                                                 The feed line must be cut to an even number of physical half- wavelengths long                                               The antenna feed-point impedance must be matched to the characteristic impedance of the feed line                                 DG9D06XXXNIf a center-fed dipole antenna is fed by parallel-conductor feed line, how would an inductively coupled matching network be used between the two?                                                           It would not normally be used with parallel-conductor feed lines                                              It would be used to increase the SWR to an acceptable level                                                                       It would be used to match the unbalanced transmitter output to the balanced parallel-conductor feed line                     It would be used at the antenna feed point to tune out the radiation resistance                                                   CG9D07XXXNIf a 160-meter signal and a 2-meter signal pass through the same coaxial cable, how will the attenuation of the two signals compare?                                                                        It will be greater at 2 meters                                                                                It will be less at 2 meters                                                                                                       It will be the same at both frequencies                                                                                      It will depend on the emission type in use                                                                                        AG9D08XXXNIn what values are RF feed line losses usually expressed?                                                                                                                                                   Bels/1000 ft                                                                                                  dB/1000 ft                                                                                                                        Bels/100 ft                                                                                                                  dB/100 ft                                                                                                                         DG9D09XXXNWhat 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?                                                                 4:1                                                                                                           1:4                                                                                                                               2:1                                                                                                                          1:2                                                                                                                               AG9D10XXXNWhat 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?                                                                  2:1                                                                                                           50:1                                                                                                                              1:5                                                                                                                          5:1                                                                                                                               DG9D11XXXNWhat 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?                                                                  2:1                                                                                                           50:50                                                                                                                             0:0                                                                                                                          1:1                                                                                                                               DG9D11XXXNWhat 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?                                                                  2:1                                                                                                           50:50                                                                                                                             0:0                                                                                                                          1:1                                                                                                                               D