Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
70 Cards in this Set
- Front
- Back
|
The primary reason the high-frequency radio uses single sideband modulation is |
that it provides may channels to operate on
|
|
|
The typical high-frequency radio has |
280,000 channels spaced 100 hertz apart |
|
|
What is the transmitted frequency when a high-frequency radio control is set to 27.5 MHz, the signal is modulated by a 1000-hertz tone, and lower sideband mode is selected? |
27.499 MHz |
|
|
Which is true concerning high-frequency radio reception? |
antenna coupler is required to match antenna impedance |
|
|
Which is not a mode of operation for the ARC-190 high-frequemcy radio system? |
FM |
|
|
You are using a learned preset for the ARC-190 high-frequemcy radio system. For this application, the transmit tune time is less than |
35 ms |
|
|
Which version of the ARC-190 high-frequency radio system receiver-transmitter must be installed to operate properly if the system has a CU-2275(V)1 high-frequency coupler installed? |
any of the above |
|
|
In the ARC-190 high-frequency radio system, the high-frequency coupler matches the impedance of the antenna to the receiver-transmitter in order to |
give max power transfer |
|
|
A very-high frequency FM radio is mainly used on aircraft that |
contact ground forces |
|
|
Which very-high frequency radio system would have the best chance of receiving a signal from a station located beyond the horizon? |
VHF FM |
|
|
Which VHF radio system uses two antennas?
|
FM homing
|
|
|
On which frequencies can the ARC-186 VHF radio not transmit in the AM mode?
|
108 to 115.975 MHz
|
|
|
The frequency range of the ARC-186 VHF radio receiver in the FM mode is from
|
30 to 87.975 MHz
|
|
|
We call the C-11029/ARC-186 a true comm/nav box because
|
it controls both the VHF radio and the VOR/ILS receiver
|
|
|
How many frequencies are available for use by the main receiver in the ARC-164 ultra-high frequency radio? |
7000 |
|
|
The Have Quick II frequency-hopping pattern and rate is programmed by the |
word of day |
|
|
The Have Quick II radio's entry point in the frequency-hopping pattern is established by the word of day; however, it is actually programmed by |
the net number |
|
|
When not operating in the secure voice mode, two signals are received simultaneously on the same operating net, the Have Quick II radio automatically goes into conferencing. It does this by |
offsetting the second transmitter frequency by 25 kilohertz |
|
|
An advantage of the remote Have Quick II configuration over the panel mount configuration in an aircraft is that it |
reduces cost by using existing aircraft wiring |
|
|
The Have Quick II multiple word of day modification provided loading capacity that allows entry of up to |
six words of day for 6 day use
|
|
|
What LRU provides primary control of the ARC-210 radio system? |
remote tuning panel |
|
|
Which LRU will automatically take over in the event of failure in the ARC-210 radio system primary control method? |
remote tuning panel |
|
|
The remote tuning panel cannot control the ARC-210 radio system if the |
radio set control is turned on |
|
|
If the ARC-210 radio system high pass filter is inoperable, what symptom may be present to the radio operator? |
receiving FM commercial stations below 108 MHz |
|
|
What LRU is used to control the ARC-210 radio system in the event of a dual integrating processing failure? |
radio set control |
|
|
How do you swap the active and standby frequencies of the ARC-210 radio system using the remote tuning panel? |
pressing the inner knob |
|
|
The ARC-210 radio system must be tuned within which frequency range to receive tactical/close air support information? |
30 to 87.975 MHz |
|
|
Which one of the following frequencies is not reserved for emergency use? |
8.0 MHz |
|
|
Parachute emergency radios transmit on the |
UHF emergency frequency |
|
|
The PRC-90 hand-held emergency radio transmits on what two fixed channels? |
243.0 and 284.8 MHz |
|
|
Which one of the following is not an operating mode of the PRC-90 emergency radio? |
three way voice communication |
|
|
The emergency communications system that deploys from the aircraft before or at impact to give it a better chance of surviving a crash is the
|
crash position indicator (CPI) |
|
|
The emergency communications system that emits pulses of high frequency sound is the |
underwater acoustical beacon (UAB) |
|
|
The underwater acoustical beacon can operate in fresh or salt water to a depth of |
20,000 ft |
|
|
Inadvertent activation of the underwater acoustical beacon from moisture is prevented by |
switch design |
|
|
When activated, the emergency locator transmitter continuously transmits on frequencies |
121.5 and 243.0 MHz |
|
|
What switch on the emergency lcoator transmitter (ELT) resets the impact sensor circuits to a predetermined level after installation of the ELT? |
g force reset switch |
|
|
One purpose of the interphone system is to |
provide a means of keying and modulating the radio transmitters |
|
|
The term used to describe the lines used to determine whether a transceiver connected to the interphone system will be in the transmit or receive condition is |
control lines |
|
|
The C-6567/AIC-25 interphone set control |
has eight monitor/volume controls that are switches and potentiometers
|
|
|
The purpose of the +17 to +29 VDC on the CALL control line of the C-6567 is to |
activate the AGC circuits in the headset amplifiers
|
|
|
The CALL switch applies a DC voltage to the CALL control line and activates the AGC circuits in all aircraft control panel's headset amplifiers causing the CALL audio to be heard at least how many dB louder than any other signals present? |
6
|
|
|
Which crewmembers will receive messages during hot-mic operation? |
only those with the hot-mic listen switch activated
|
|
|
Which transmission operation of the interphone system is most advantageous to pilots/copilots? |
two-button operation bc it allows pilot/copilot to talk on radios and maintain comm with crew
|
|
|
The C-6624/AIC-25 allows a crewmember to talk on the |
CALL and interphone functions
|
|
|
The major difference between the U-94A/U and the U-92A/U jack is the
|
U-94A/U jack has a PTT button |
|
|
When connecting the WM-85/U interphone cable to the U-94A/U, what wire color is connected to the PTT button on the U-94A/U? |
yellow
|
|
|
Which is not a level of built in test on the airborne digital interphone system? |
degraded BIT
|
|
|
The airborne digital interphone system (ADIS) interphone audio control panel provides monitoring facilities for listening to audio signals on how many possible channels? |
10
|
|
|
The VOL adjustment on the ADIS interphone audio control panel allows the operator to |
adjust combined received signals simultaneously or individually
|
|
|
The forward external interphone receptacle in the airborne digital interphone system (ADIS) system allows the operator to transmit on a radio, even though the other two external receptacles cannot, because it is connected to the |
boom operator's forward ICP
|
|
|
On the airborne digital interphone system, when either the crew compartment or boom compartment is in the local ICS mode, no communication between the front and back can occur without the use of the |
CALL function
|
|
|
When CALL mode is activated on the airborne digital interphone system, all radios (excluding aural warnings) are |
decreased to 6dB of max volume
|
|
|
When the airborne digital interphone system is in emergency mode, IACP #3 is directly connected to |
HF radio #1
|
|
|
When the airborne digital interphone system (ADIS) interphone adapter unit passes priority one input signals, the signals are passed |
without signal level adjustment
|
|
|
If you need to store 12 cryptographic keys, then how many KYK-13 devices will you require? |
2
|
|
|
The capability of the KYK-13 to connect to different crypto units or another KYK-13 is provided by |
two chasis mounted six pin connectors
|
|
|
If the mode select switch on the KYK-13 is set to OFF CHECK and the user presses the INITIATE button, then the KYK-13 will |
zeroize all stored keys
|
|
|
When checking the KYK-13 for stored crypto keys, the presence of a valid key is indicated by |
one red indicator flash
|
|
|
Which control on the KYK-13 transfer device transfers a key into the selected storage address? |
initiate button on
|
|
|
Why does the KYK-13 parity light flash on and off continuously? |
bc key transfer was prevented
|
|
|
Which of the following is not a primary purpose of the CYZ-10 data transfer device? |
process host/application data |
|
|
|
three external openings
|
|
|
If the CYZ-10 is placed in long term storage in the OFF condition, then batteries are expected to last approximately? |
119 days
|
|
|
What is the purpose of the data transfer device (DTD) zeroize function? |
to erase all battery backed memory in the DTD
|
|
|
What KY-58 line replaceable unit (LRU) has the primary function of transmitting and receiving secure voice messages? |
TSEC secure voice processor
|
|
|
Which one of the following units is needed to transfer crypto variables into the KY-58 processor? |
KYK-13 fill device
|
|
|
What is the purpose of the KY-100 main terminal unit? |
encodes and decodes transmitted and received audio signals
|
|
|
Which of the following is not a function of the COMSEC mode control panel? |
allows selected radio audio signals to be passed through the intercom
|
|
|
The crewmembers address the secure voice system through the |
interphone system
|
