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75 Cards in this Set
- Front
- Back
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The primary reason high frequency (HF) radio uses single sideband (SSB) modulation is |
a. that fidelity is greatly increased. b. the system can use a very wide-band pass. c. the transmitter output power is 10 watts. d. that it provides many channels on which to operate. |
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What is the transmitted frequency when a high frequency (HF) radio control is set to 25.000-megahertz (MHz), with a signal modulated by a 1000-hertz tone, when the lower sideband mode isselected? |
a. 24.500 MHz. b. 24.999 MHz. c. 25.001 MHz. d. 25.000 MHz. |
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Which is not a mode of operation for the ARC–190 high-frequency radio system? |
a. Frequency modulation (FM). b. Upper sideband (USB) data. c. Lower sideband (LSB) voice. d. Amplitude modulated equivalent (AME). |
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You are using a learned preset for the ARC–190 high-frequency (HF) radio system. For thisapplication, the transmit tune time is less than |
a. 5 milliseconds. b. 25 milliseconds. c. 35 milliseconds. d. 50 microseconds. |
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This version of the ARC–190 high-frequency (HF) radio system receiver-transmitter (RT) onlyoperates properly if the system has a CU–2275(V)1 HF antenna coupler installed? |
a. RT–1341(V)1. b. RT–1341(V)2. c. RT–1341(V)3. d. RT–1341(V)4. |
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In the ARC–190 high frequency (HF) radio system, what helps prevent high voltage arcingwithin the HF coupler at high altitudes? |
a. Sealed tuner assembly. b. Sealed control compartment. c. Pressurized tuner assembly. d. Pressurized control compartment. |
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The external blower for an ARC–190 high-frequency radio system is overheating. This situationwill cause a receiver-transmitter (RT) fault and |
a. keep the coupler from tuning. b. reduce the external blower speed. c. cause the RT fault light to turnoff. d. keep the transmitter from functioning. |
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A very-high frequency (VHF) frequency modulated (FM) radio is mainly used on aircraft that |
a. contacts ground forces. b. contacts airborne tankers for fuel. c. uses Air Force controlled airfields. d. is controlled by civilian air traffic controllers. |
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Which very-high frequency (VHF) radio system would have the best chance of receiving a signalfrom a station located beyond the line of sight (LOS)? |
a. VHF amplitude modulated (AM). b. VHF omnirange (VOR). c. VHF frequency modulated (FM). d. Localizer/glideslope. |
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Which very-high frequency (VHF) radio system uses two antennas? |
a. Frequency modulated (FM) homing. b. Amplitude modulated (AM) communications. c. FM communications. d. AM direction finder. |
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The frequency range of the ARC–186 very-high frequency (VHF) radio receiver, in only thereceive amplitude modulated (AM) mode, is this megahertz (MHz) range. |
a. 30 to 87.975. b. 38 to 87.975. c. 108 to 151.975. d. 116 to 151.975. |
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Which frequencies can the ARC–186 very-high frequency (VHF) radio not transmit with in theamplitude modulated (AM) mode? |
a. 30 to 87.975 megahertz (MHz). b. 38 to 87.975 MHz. c. 108 to 115.975 MHz. d. 116 to 151.975 MHz. |
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We call the C–11029/ARC–186 a true communications/navigation (comm/nav) control boxbecause |
a. rivet work force changed its design. b. it controls the very-high frequency amplitude-modulated (AM) and frequency modulated (FM)systems. c. it controls both the very-high frequency (VHF) radio and the VHF-omnirange/instrument landingsystem (VOR/ILS) receiver. d. automatic direction finding and homing share similar communication and navigation systems’characteristics. |
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How many frequencies are available for the tunable main receiver to use in the ARC–164 ultra-high frequency (UHF) radio? |
a. 10000. b. 7000. c. 3500. d. 700. |
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How do Have Quick (HQ) radios resist jamming? |
a. Frequency-hopping. b. Retransmission. c. Encryption. d. Phase shifting. |
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The Have Quick II radios’ frequency-hopping pattern and rate is programmed using thisfeature. |
a. Time-of-day. b. word-of-day. c. Net number used. d. Universal time coordinated. |
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Have Quick II radios frequency hop at the same instant in time because they |
a. use the same net number. b. use time-of-day information. c. have the same word-of-day entered. d. are equipped with internal atomic clocks. |
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The Have Quick II radio’s entry point in the frequency-hopping pattern is established by theword-of-day; however, it is actually programmed using the |
a. time-of-day. b. net number. c. multiple word-of-day. d. universal time coordinated. |
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When two signals are received simultaneously on the same operating net, the Have Quick IIradio automatically goes into conferencing. It does this by |
a. resetting the net number for communication. b. setting the receiver to narrowband reception. c. injecting a beat frequency to prevent loss of intelligence. d. offsetting the second transmitter frequency by 25 kilohertz. |
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The HAVE QUICK II panel-mount configuration is primarily used in |
a. retrofit situations. b. bomber aircraft. c. cargo aircraft. d. new aircraft. |
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What is an advantage of the remote Have Quick II configuration over the panel mountconfiguration in an aircraft? |
a. More convenient for maintenance. b. Can be used with a remote channel indicator. c. Reduced cost by using existing aircraft wiring. d. Can be used with a ultra-high frequency direction finding system. |
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The HAVE QUICK II multiple word-of-day (MWOD) modification provided loading capabilityto allow entering up to how many words for what number of days usage, respectively? |
a. Two; 2 days use. b. Four, 4 days use. c. Six; 6 days use. d. Eight; 8 days use. |
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Which component takes over control in the event of an ARC–210 radio system remote tuningpanel’s failure? |
a. Radio set control. b. Control display unit. c. Remote tuning panel. d. Remote volume control. |
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The remote tuning panel can not control the ARC–210 radio system if the |
a. radio set control is turned on. b. radio set control is turned off. c. remote volume control is turned on. d. remote volume control is turned off. |
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A high pass filter is installed on the ARC–210 radio system to |
a. attenuate frequency-modulated (FM) commercial stations below 108 megahertz (MHz). b. attenuate FM commercial stations above 108 MHz. c. bleed over aircraft FM transmissions below 108 MHz. d. bleed over aircraft FM transmissions below 108 MHz. |
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What component is used to control the ARC–210 radio system if a dual integrating processingcenter (IPC) fails? |
a. Radio set control. b. Control display unit. c. Remote tuning panel. d. Remote volume control. |
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You swap the active and standby frequencies on the ARC–210 radio system, using the remotetuning panel (RTP), by |
a. pressing the outer knob. b. pressing the inner knob. c. rotating the outer knob. d. rotating the inner knob. |
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Which one of the following frequencies is not reserved for emergency use? |
a. 8.0 megahertz (MHz) b. 40.5 MHz. c. 121.5 MHz. d. 243.0 MHz. |
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Which one of the following is not a PRC–90 emergency radio operating mode? |
a. Morse code. b. Two-way voice communications. c. Three-way voice communications. d. Variable audio modulation between 1000 and 300 hertz. |
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The emergency communications system that deploys from an aircraft before or at impact, togive it a better chance of surviving a crash, is the |
a. parachute radio (PR). b. crash position indicator (CPI). c. underwater acoustical beacon (UAB). d. emergency locator transmitter (ELT). |
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The emergency communications aircraft system that emits pulses of high-frequency (HF) soundis the |
a. parachute radio (PR). b. crash position indicator (CPI). c. underwater acoustical beacon (UAB). d. emergency locator transmitter (ELT). |
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Approximately how many days can the underwater acoustical beacon transmit before batterypower is depleted? |
a. 10. b. 20. c. 25. d. 30. |
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When activated, the emergency locator transmitter (ELT) continues transmitting on frequencies |
a. 8.0 and 121.5 megahertz (MHz). b. 243.0 and 282.8 MHz. c. 254.5 and 282.8 MHz. d. 121.5 and 243.0 MHz. |
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34. (411) The emergency locator transmitter (ELT) is designed to survive an impact of up to |
a. 50 gravitational forces or Gs. b. 100 Gs. c. 125 Gs. d. 135 Gs. |
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All interphone audio common lines are connected to ground at a single point in order to |
a. amplify stray audio frequencies. b. eliminate audio frequencies above 16,000 kilohertz (kHz). c. ensure that high-voltage potentials are not detected in the audio circuits. d. minimize the stray electromagnetic radiation from being picked up by the system. |
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This term describes the lines used to determine whether a transceiver connected to the intercomsystem will be in a transmit or receive condition. |
a. Control. b. Receiver audio. c. System ground. d. Microphone audio. |
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The seven-position ROTARY SELECT switch, on the C–6567 interphone control panel, allowsthe operator to select, monitor, key, and modulate any one of this number of different radios throughthe intercom system. |
a. Four. b. Five. c. Six. d. Seven. |
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The purpose of the +17 to +29-voltage direct current (VDC) on the CALL control line of the C–6567 interphone set control is to |
a. reduce the level of CALL audio output. b. disable the mic amplifier during CALL operation. c. energize the CALL switch on the front panel of the c–6624. d. activate the automatic gain control (AGC) circuits in the headset amplifiers. |
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The CALL switch applies a direct current (DC) voltage to the CALL control line and activatesthe automatic gain control (AGC) circuits in all aircraft control panels’ headset amplifiers. Thiscauses the CALL audio to be heard at least |
a. 2 decibel (dB) louder than any other signals present. b. 4 dB louder than any other signals present. c. 6 dB louder than any other signals present. d. 8 dB louder than any other signals present. |
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This INTERPHONE FUNCTION switch allows crewmembers to talk to other aircraft positionswithout pressing the mic button. |
a. CALL. b. Hot-mic. c. Monitor. d. Interphone. |
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The radio TRANSMITTER SELECTION switch is a seven-position rotary switch that allowsthe aircrew to |
a. select and transmit on each radio system and the interphone. b. select and monitor the aircraft emergency warning tones. c. tune each radio system and key the interphone. d. select the radio transmitter frequencies. |
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Which interphone system transmission operation is most advantageous to pilots/copilots andwhy is it important? |
a. One-button operation; it is less time consuming. b. One-button operation; it allows them to talk on radios and maintain communication with the crew. c. Two-button operation; it is less time consuming. d. Two-button operation; it allows them to talk on radios and maintain communication with the crew. |
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The major difference between the U92A/U and the U94A/U jack, on the C–6624/AIC–25interphone station’s H–78/A1C headset/microphone, is the |
a. U92A/U has a push-to-talk (PTT) button. b. U94A/U has a PTT button. c. U94A/U is located on the pilot’s throttle grip. d. U92A/U requires an additional wire for the TALK switch. |
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What wire color is connected to the push-to-talk (PTT) button, on the U–94A/U of the C–6624/AIC–25 interphone station’s H–78/A1C headset/microphone, when you connect the WM–85/Uinterphone cable to the U–94A/U jack? |
a. White. b. Green. c. Black. d. Yellow. |
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To what pins on the U–92A/U headset/microphone, of the C–6624/AIC–25 interphone station,are the MIKE HIGH (red) and MIKE LOW (green) amplifier wires connected? |
a. 1 and 2, respectively. b. 2 and 4, respectively. c. 3 and 1, respectively. d. 3 and 4, respectively. |
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When wires easily pull loose from the U–94A/U headset/microphone connection on the C–6624/AIC–25 interphone station, it is typically because |
a. the internal clamp is missing. b. the wires were cut to incorrect length. c. the wires have weak solder connections. d. the screws have not been tightened completely. |
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The airborne digital interphone system (ADIS) combined audio interface unit (CAIU) providescontinuous operation using |
a. two internal audio interface units. b. three internal audio interface units. c. two external backup audio interface units. d. three external backup audio interface units. |
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The VOL adjustment on the airborne digital interphone system (ADIS) interphone audio controlpanel (IACP) allows the operator to |
a. only adjust received signals individually. b. only adjust combined received signals simultaneously. c. adjust combined received signals simultaneously or individually. d. adjust combined transmit and receive signals simultaneously or individually. |
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Which built-in-test (BIT) is activated by pressing the BIT pushbutton switch on the airbornedigital interphone system (ADIS) interphone audio control panel (IACP)? |
a. Continuous BIT (CBIT). b. Degraded BIT (DBIT). c. Maintenance BIT (MBIT). d. Power-up BIT (PBIT). |
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The airborne digital interphone system (ADIS) intercom control panel (ICP) has provisions forthese operational functions. |
a. Only talk and listen on the interphone circuit. b. Hot-mic and CALL on the interphone circuit. c. Hot-mic, talk, and listen on the interphone circuit. d. Only talk, listen, and CALL on the interphone circuit. |
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When a labeled pushbutton is pressed on the airborne digital interphone system (ADIS)interphone audio control panel (IACP), but there is no functional equipment installed, then the lightemitting diode (LED) |
a. illuminates with no digital display message. b. remains off with no digital display message. c. illuminates and produces a digital display message. d. remains off and produces a digital display message. |
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If a second operator keys a transmitter that is already keyed, during transmit mode on theairborne digital interphone system’s (ADIS) interphone audio control panel (IACP), then the secondoperator’s IACP will display the message |
a. BUSY. b. NO TX. c. IN USE. d. INVALID. |
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When CALL mode is activated on the airborne digital interphone system (ADIS), all radioschange by this level of maximum volume. |
a. Increased 6 decibel (dB). b. Decreased 6 dB. c. Increased 8 dB. d. Decreased 8 dB. |
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When the airborne digital interphone system (ADIS) is in emergency mode, interphone audiocontrol panel (IACP) #3 (Navigator) is directly paired with |
a. high frequency radio #1. b. communications radio #1. c. communications radio #2. d. communications radio #3. |
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When the airborne digital interphone system (ADIS) interphone adapter unit (IAU) passespriority one input signals, the signals are passed |
a. with 6 decibel (dB) signal increase. b. with 6 dB signal attenuation. c. with 8 dB signal attenuation. d. without signal level adjustment. |
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The purpose of the cryptographic KOI–18 loading device is to |
a. store electronic keying material. b. protect classified programs from compromise. c. encrypt data stored in the data transfer device. d. convert an eight level punched tape data to a serial output. |
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If you leave the punched tape in the KOI–18 cryptographic loading device for an extendedamount of time, the |
a. KOI–18 will shutdown. b. KOI–18 battery will run down. c. punched tape will be damaged. d. transferred crypto key will expire. |
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How is classified information removed from the KOI–18 cryptographic loading device when thekey information is no longer loading? |
a. When encrypting the information. b. By removing the tape from the unit. c. Upon removing the battery power supply. d. By Zeroizing the selected storage position. |
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How many KYK–13 cryptographic loading devices will you require if 12 cryptographic keysneed to be stored? |
a. One. b. Two. c. Four. d. Six. |
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If the mode select switch on the KYK–13 cryptographic loading device is set to OFF CHECKand the user presses the INITIATE button, then the KYK–13 will |
a. zeroize a single stored key. b. zeroize all stored keys. c. verify presence of a single stored key. d. verify presence of all stored keys. |
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This indicates the presence of a valid key that is loaded into the KYK–13 cryptographic loadingdevice. |
a. One 60 Hz audible beep. b. One red indicator flash. c. Two 60 Hz audible beeps. d. Two red indicator flashes. |
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The KYK–13 cryptographic loading device’s parity light continuously flashes on and off whenthe |
a. battery power is low. b. key transfer was prevented. c. stored key is no longer valid. d. built-in-test is being performed. |
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Which of the following is not a primary purpose of the cryptographic CYZ–10 data transferdevice (DTD)? |
a. Process communications security (COMSEC) variables. b. Store electronic keying material. c. Process host/application data. d. Store frequency-hopping data. |
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The CYZ–10 data transfer device (DTD) is cryptographic equipment that has a sealed case withthis number of external openings. |
a. One. b. Two. c. Three. d. Four. |
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How is the CYZ–10 data transfer device (DTD) classified? |
a. By the DTD software load. b. By data entry on the DTD key pad. c. By installing the crypto ignition key. d. Through the host/application section. |
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When the crypto ignition key (CIK) is removed from the CYZ–10 data transfer device (DTD),the stored data is |
a. encrypted and classified operations are inhibited. b. erased and classified operations are authorized. c. encrypted and the communications security (COMSEC) section of the DTD is fully enabled. d. erased and COMSEC section of the DTD is fully enabled. |
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Approximately how many days are batteries expected to last if the CYZ–10 data transfer device(DTD) is placed in long-term storage in the OFF condition. |
a. 30. b. 79. c. 119. d. 156. |
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The purpose of the data transfer device (DTD) zeroize function is to |
a. activate all data content within the DTD. b. initiate a destructive BIT within the DTD. c. erase the crypto ignition key data from DTD. d. erase all battery-backed memory in the DTD. |
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Which boot is being performed if the CYZ–10 data transfer device (DTD) start up built-in test(BIT) takes between 30 and 60 seconds? |
a. Hot. b. Warm. c. Cold. d. Initial. |
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Which KY–58 line replaceable unit (LRU) has the primary function of transmitting andreceiving secure voice messages? |
a. Z-AHQ adapter. b. Remote control unit control panel. c. KYK–13 fill device. d. TSEC secure voice processor. |
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Which secure voice component will you use to integrate the KY–58 processor into existingaircraft installations? |
a. Z-AHQ adapter. b. KY–58 processor. c. KYK–13 fill device. d. KY–58 remote control unit control panel. |
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Which unit is needed to transfer cryptographic variables into the KY–58 processor? |
a. Z-AHQ adapter. b. KY–75 processor. c. KYK–13 fill device. d. KY–58 remote control unit control panel. |
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The purpose of the battery in the KY–58 processor is to |
a. prevent the automatic zeroing of the codes after the aircraft power is removed. b. enable the secure voice system to be used as an emergency transmitter. c. enable the secure voice system to operate from aircraft power. d. zeroize the codes after aircraft power is removed. |
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Which of the following is not a function of the communications security (COMSEC) modecontrol panel? |
a. Controls delayed push-to-talk mode. b. Controls plain text, cipher, and guard transmission levels. c. Allows selected radio audio signals to be passed through the intercom. d. Allows selection of command or very/ultra-high frequency (V/UHF) radio for COMSEC mode. |
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The crewmembers address the secure voice system through the |
a. interphone system. b. AN/ARC 210 switch panel. c. KY–100 mode control panel. d. Have Quick II radio set control. |
