A. that fidelity is greatly increased
B. the transmitter output power is 10 watts
C. the system can use a very wide-band pass
D. that it provides many channels to operate on
A. 7,000 channels spaced 100 hertz apart
B. 7,000 channels spaced 25 kilohertz apart
C. 280,000 channels spaced 100 hertz apart
D. 280,000 channels spaced 25 kilohertz apart
A. 26.500
B. 27.499 MHz
C. 27.501 MHz
D. 27.600 MHz
A. Antenna coupler is required to match antenna impedance
B. Audio fidelity is higher than in ultra-high frequency radios
C. The receiver sensitivity is more critical than receiver selectivity
D. The receiver must be capable of receiving unmodulated upper and lower sideband signals
A. FM
B. AME
C. USB data
D. LSB voice
A. 5 milliseconds
B. 25 milliseconds
C. 35 milliseconds
D. 50 microseconds
A. RT–1341(V)1.
B. RT–1341(V)2
C. RT–1341(V)3
D. Any of the above
A. increase the voltage standing wave ratio
B. give maximum power transfer
C. increase receiver selectivity
D. increase receiver sensitivity
A. contact ground forces
B. use Air Force controlled airfields
C. contact airborne tankers for fuel
D. are under the control of civilian air traffic controllers
A. Localizer/glideslope
B. Very-high frequency AM
C. Very-high frequency FM
D. Very-high frequency omnirange
A. FM homing
B. AM communications
C. FM communications
D. AM direction-finder
A. 30 to 87.975 megahertz
B. 38 to 87.975 megahertz
C. 108 to 115.975 megahertz
D. 116 to 151.975 megahertz
A. 30 to 87.975 megahertz
B. 38 to 87.975 megahertz
C. 108 to 151.975 megahertz
D. 116 to 151.975 megahertz
A. rivet work force changed its design
B. it controls both the very-high frequency AM and FM systems
C. it controls both the very-high frequency radio and the VOR/ILS receiver
D. automatic direction finding and homing share as many characteristics with the navigation systems as they do with communication systems
A. 10000
B. 7000
C. 3500
D. 7
A. time-of-day
B. word-of-day
C. net number used
D. universal time coordinated
A. time-of-day
B. the net number
C. multiple word-of-day
D. universal time coordinated
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
A. is more convenient for maintenance
B. can be used with a remote channel indicator
C. reduces cost by using existing aircraft wiring
D. can be used with a ultra-high frequency direction finding system
A. two words-of-day for 2 day use
B. four words-of-day for 4 day use
C. six words-of-day for 6 day use
D. eight words-of-day for 8 day use
A. Radio set control
B. Remote tuning panel
C. Receiver/transmitter
D. Remote volume control
A. Radio set control
B. Control display unit
C. Remote tuning panel
D. Remote volume control
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
A. Receiving FM commercial stations below 108 MHZ
B. Receiving FM commercial stations above 108 MHZ
C. Bleedover of aircraft’s FM transmissions below 108 MHZ
D. Bleedover of aircraft’s FM transmissions above 108 MHZ
A. Radio set control
B. Control display unit
C. Remote tuning panel
D. Remote volume control
A. Pressing the outer knob
B. Pressing the inner knob
C. Rotating the outer knob
D. Rotating the inner knob
A. 30 to 87.975 MHz
B. 108 to 117.975 MHz
C. 156 to 173.975 MHz
D. 225 to 399.975 MHz
A. 8.0 MHz
B. 40.5 MHz
C. 121.5 MHz
D. 243.0 MHz
A. VHF-AM emergency frequency
B. VHF-FM emergency frequency
C. UHF emergency frequency
D. HF emergency frequency
A. 8.0 and 121.5 MHz
B. 243.0 and 282.8 MHz
C. 254.5 and 282.8 MHz
D. 121.5 and 243.0 MHz
A. Morse code
B. Two-way voice communication
C. Three-way voice communications
D. Variable audio modulation between 1000 and 300 Hz
A. parachute radio (PR).
B. crash position indicator (CPI).
C. underwater acoustical beacon (UAB).
D. emergency locator transmitter (ELT).
A. parachute radio (PR)
B. crash position indicator (CPI)
C. underwater acoustical beacon (UAB)
D. emergency locator transmitter (ELT)
A. 15,000 feet
B. 20,000 feet
C. 25,000 feet
D. 30,000 feet
A. a switch design
B. an aluminum alloy case
C. the aircraft mounting method
D. a predetermined resistance threshold
A. 8.0 and 121.5 MHz
B. 243.0 and 282.8 MHz
C. 254.5 and 282.8 MHz
D. 121.5 and 243.0 MHz
A. AUTO-OFF-RESET switch
B. ELT operation switch
C. g-force reset switch
D. Master switch
A. control lines
B. receiver audio lines
C. system ground lines
D. microphone audio lines
A. prevent the radio transmitters from being over modulated
B. remove amplitude variations from the aircraft warning tones
C. provide a means of keying and modulating the radio transmitters
D. filter out 60-Hz hum in the audio signals going to the radio systems
A. is a bulkhead-mounted unit
B. has a five-position rotary select switch used to key the radios
C. has eight monitor/volume controls that are switches and potentiometers
D. has a main volume control used to compensate for the weak audio of a radio system
A. reduce the level of CALL audio output.
B. disable the mic amplifier during CALL operation.
C. activate the AGC circuits in the headset amplifiers.
D. energize the CALL switch on the front panel of the C–6624.
A. 2.
B. 4.
C. 6.
D. 8.
A. Only those with the INT switch activated.
B. All those connected to the interphone system.
C. Only those with the hot-mic talk switch activated.
D. Only those with the hot-mic listen switch activated.
A. One-button operation because it is less time consuming.
B. One-button operation because it allows pilot/copilot to talk on radios and maintain comm with crew.
C. Two-button operation because it is less time consuming.
D. Two-button operation because it allows pilot/copilot to talk on radios and maintain comm with crew.
A. hot-mic and CALL functions.
B. two-button and CALL functions.
C. CALL and interphone functions.
D. hot-mic and interphone functions.
A. U–92A/U jack has a PTT button.
B. U–94A/U jack has a PTT button.
C. U–94A/U is located on the pilot’s throttle grip.
D. U–92A/U requires an additional wire for the talk switch.
A. White.
B. Green.
C. Black.
D. Yellow.
A. Power-up BIT.
B. Degraded BIT.
C. Continuous BIT.
D. Maintenance BIT.
A. 8.
B. 10.
C. 12.
D. 14.
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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