Figure 3-3. UHF Control panel (AN/ARC- 164)
the guard frequency and the
guard receiver is disabled.
Turns main receiver squelch on
When pressed, transmits a 1,020
Hz tone on the selected frequen-
Selects operating function.
Turns set off.
Selects normal transmission with
reception on main receiver.
Selects normal transmissions
with reception on both the main
receiver and the guard frequency
Activates ADF or homing sys-
tem (if installed) and main re-
c. Normal Operation.
(1) Turn on.
1. Insure aircraft power is on.
It is presumed the AVIONICS
MASTER POWER switch is on,
and that normally used avionic
2. AVIONICS MASTER POWER switch
(overhead panel) - ON.
3. Function switch (UHF panel) MAIN or
BOTH position, as required.
If function selector is at MAIN
setting, only the normal UHF
communications will be received.
If selector is at BOTH position,
emergency communications on
the guard channel and normal
UHF communications will both be
1. UHF audio monitor switch (#3, audio
panel) - ON or transmit/interphone
selector (audio panel) - 3 position.