Preset Channel indicator
SQ DISABLE switch
Decimal MC selector
One MC selector
Ten MC selector
Tuning mode switch
PRESET CHAN selector
Figure 3-4. UHF Command Set (AN/ARC-51BX)
(2) Transmit operating procedures.
channel control or manual frequency
(audio control panel) - No.2 position.
2. Microphone switch - Press.
The preset CHAN selector and
(3) Shutdown procedure.
inoperative when the mode selector
1. Function switch - OFF.
is set to GD XMIT position.
d. UHF Command Set Emergency Operation.
3. Volume - Adjust.
To adjust volume when audio is not
frequency (guard channel) shall be
being received, turn squelch disable
restricted to emergencies only. An
switch ON, adjust volume for
emergency frequency of 121.500 MHz
comfortable noise level, then turn
is also available on the VHF (KY-196)
squelch disable switch OFF.
COMM-1 and/or COMM-2 radio sets.
4. Squelch - As Required.
(audio control panel) - No. 2
Change 5 3-7