TOD key -Press to retrieve the radios TOD
A cursor will appear allowing entry of a new TOD. All leading and trailing zeros must be entered. If no new TOD is entered then radios will retain the displayed TOD
SQL displays and squelch function is activated only when SC mode is selected.
SQL key - Press to select squelch as desired
OSET/MEMBER/CONTROL key - Press to select as desired
Selects frequency offset for current preset or manual frequency when operating in the SC mode. MEMBER or CONTROL is selected when operating the FH mode.
FREQ LIST key - Press to select frequency list
FH DATA PAGE 2 key - Press to load, edit, and select frequency hop data page 2 when FH mode is selected
When helicopter is on the ground the legend for L-2 is LOAD COMSEC or MODE 23.
HSET/LSET key - Press to select hopset display or lockset display information
CH keys - Press to increment / decrement displayed fill channel code received from radio
Displayed channel code received from radio. Displayed channel number is channel in which the hopset is stored and hopset used for frequency hopping when FH data selected is HSET. Displayed channel number is the first digit of lockout set when FH data selected is LSET.
This channel number is not to be confused with operational frequency channel of the radio. This channel is for selection and display of FH parameter only.
HSET EDIT key -Press to change existing channel code or create new code. Code displays next to HSET channel number
ZEROIZE/LATE NET (R-1) - ZEROIZE clears all data stored in the RT, including all preset SC frequencies and FH data
When pressed ZEROIZE will flash; press R-1 again to ZEROIZE. ZEROIZE is only available when the helicopter is on the ground. LATE NET allows the RT containing all fill data, but whose clock is out of sync, to join a net. To activate LATE NET, select appropriate FH channel (L-3/L-4) and press R-1; LATE NET will box until the RT has received a new time sync. LATE NET is only available when the helicopter is off the ground.
While LATE NET is boxed, transmission by
other members of the net causes the
radio’s time to synchronize
COPY HSET (R-2) - Allows one channel to be copied to another
When pressed display will change to FROM CH=, a stored channel is entered from the MFK, the cursor changes to TO CH=, and desired destination channel is entered from the MFK.
FILL (R-3) - Allows TSEC variable, HSET variables and LSET variables to be loaded to the RT while the helicopter is on the ground.
To load, connect fill device to RT, select desired variable on fill device, and turn fill device power on. Press R-3, which will box FILL, and allow the RT to interrogate fill device. The TSEC variable is loaded by selecting manual (M) channel at L-3/L-4 and pressing FILL.
Once TSEC variable is loaded, legend COLD will appear adjacent to channel indicator when M channel is selected.If an HSET is interrogated, then that HSET will be stored with displayed HSET channel number. If an LSET is interrogated, then LSET channel number associated with LSET will be stored and displayed. After complete, turn fill device power off and remove from RT. FH will not function if fill device is left attached to RT.
CLEAR (R-4) - Clears individual channels. When pressed, display changes to CH=; select channel to be cleared and enter on MFK.
ERR will appear adjacent to R-4 if current HSET channel is entered.