RCOM Flashcards
Which radios can simultaneously monitor guard while receiving and transmitting on any other frequency?
VU1 and VU2
Which radio does not offer Frequency Hopping (FH) communication?
VU1
What is the purpose of the Improved Frequency Modulation (IFM) amplifier?
Provides additional output power capabilities for optimum SINCGARS transmissions.
What communication functions are available on the EMERGENCY panel?
GUARD, XPNDR, and ZEROIZE
Where would you look to determine what radio the other crewmember is transmitting on?
RTS Indicator on EUFD
Where are the Radio Transmit Select (RTS) controls located?
Cyclic and EUFD
How can you re-select the previously used frequency?
Select Swap Control on the EUFD.
How would you know if the IFM is turned off?
No Power Status symbol (H,M,L) is displayed on FM1 line on EUFD.
How do you disable monitoring of specific radio?
Pull the push/pull pin on the CCP for the specific radio.
How can you avoid erasure of internal Comsec from the APX-123 Transponder when changing its internal battery?
Apply power (AGPU or APU) while changing the battery.
Which Pilot radio becomes the default radio in the CCP FALLBACK mode?
VU2
The VU1 provides what two bands of communications?
VHF and SATCOM
What is the indication that a radio has been tuned manually on the EUFD?
MAN (manual) is displayed on the EUFD.
A majority of the components in the COMM system interface via what major bus?
MIL-STD-1553B Multiplex (MUX BUS)
COMM mission parameters can be rapidly loaded into the system via what removable device?
Solid State Recording Device (SSRD)
Digital signal processing with low noise audio amplification, switching circuits, and automatic audio level control takes place where?
Communication Interface Unit (CIU)
The COMM System is composed of what 8 components?
ICS, ARC-201D (x2)(FM1 and FM2), ARC-231(x2)(VU1 and VU2), IDM, APX-123 Combined Transponder, BFT-AVN
The whip antenna is used by what two radios?
FM1 and VU1
What is HPA? What does it do?
High Power Amplifier. Amplifies SATCOM output to low (100 watts) or high (125 watts)
How many cryptos are available per radio?
19
Do you have to wait until the VU2 power up BIT is complete before you apply AC Power (APU or AGPU)?
Yes. VU2 will not connect to the Data Bus otherwise
What provides hold up power for FM1 and FM2 when aircraft power is removed?
Battery Box
What powers the FM1/FM2 battery box?
Five 1.5V C-Cell Batteries
Is the battery box shared between FM1 and FM2?
Yes
The left wing wingstation uses which crewstation’s master volume knob?
CPG
The right wing wingstation uses which crewstation’s master volume knob?
PLT
Can you eliminate all noise by lowering the master volume all the way?
No. Master Warnings, Cautions, and Advisory audio tones can still be heard.
How do you adjust brightness on the CCP?
In DAY mode use the brightness knob on the right MPD. Otherwise use the primary lighting knob.
How do you change the time displayed in EUFD?
DMS UTIL page or TSD UTIL page
How many modes can the APX-123 Transponder (CPX) be placed in? What are they?
There are 7 modes: 1, 2, 3/A, 4, C, S, and 5
1, 2, 3/A have emergency and IDENT function
What are the major components of the AN/ARC-201D (FM1)?
IMF Amplifier, Battery Box, Antenna Diplexer, Whip Antenna, Remote Receiver/Transmitter
*Shares whip antenna with VU1 via the diplexer
What are the major components of the AN/ARC-201D (FM2)?
Remote receiver/transmitter, Battery Box, Blade Antenna
What are the major components of the AN/ARC-231 (VU1)?
Whip Antenna, UHF SATCOM Antenna, Receiver/Transmitter, HPA, LNA, Diplexer
*Does not offer freq. hopping
*Shares the whip antenna with FM1 via the diplexer
What are the major components of the AN/ARC-231 (VU2)?
VHF and FM Antenna, UHF Antenna, Receiver/Transmitter
(V.A.T. F.U.R)
What are the major components of the AN/APX-123 (CXP) Transponder (XPNDR)?
Transponder Receiver/Transmitter, Transponder Mount, Two L-Band Dipole Antennas (Top FWD, Bottom AFT)
What are the major components of the Blue Force Tracker System (BFT-AVN)?
*will have separate class on topic at later date
L-Band SATCOM antenna for non-secure data
*Power output is 60 watts
*will have separate class on topic at later date
What are the three protocols that are supported by the IDM?
Longbow (L), Tactical Internet (TI), Private Net (P)
What is the IDM?
A high-speed digital data link modem capable of transferring near real-time mission and targeting data.
*NOT A TRANSMITTER. Provides signal via Frequency Shift Key (FSK) similar to voice
