TM 1-1510-223-10
2.
AVIONICS
MASTER
POWER
switch
(overhead control panel fig. 2-13) - ON.
(2)
Receiver operating procedure:
1.
Master VOL control - Adjust as required.
2.
Receiver RADIO MON controls (audio control
panel, fig. 3-1) - ON and adjust as required.
(3)
Transceiver operating procedure:
1.
Transmitter-intercom selector switch - Set to
desired transceiver.
2.
MIC selector switch (instrument panel, fig. 2-
16) - HEADSET or OXYGEN MASK
3.
Control wheel microphone switch - Depress to
XM1T (second level), or depress cockpit floor
MIC switch to transmit.
(4)
Intercommunication procedure:
1.
MIC selector switch (instrument panel, fig. 2-
16) - HEADSET or OXYGEN MASK
2.
Intercom mode selector switch (fig. 3-1) -
NORM or HOT MIC.
3.
If HOT MIC is selected - Speak into micro-
phone.
4.
If NORM is selected - Depress control wheel
microphone switch to first level (XMIT) and
speak into microphone.
e.
Shutdown
Procedure.
AVIONICS
MASTER
POWER switch - Off.
3-7.
UHF TRANSCEIVER (AN/ARC-164, HAVE
QUICK II).
a.
Description. The UHF transceiver, located on the
left equipment rack, is a line-of-sight radio transceiver
which provides transmission and reception of amplitude
modulated (AM) signals in the ultra high frequency
range of 225.000 to 399.975 MHz for a distance range
of up to 100 miles. Channel selection is spaced at
0.025 MHz. A separate receiver is incorporated to
provide monitoring capability for the UHF guard
frequency (243.0 MHz). UHF audio output is applied to
the audio panel where it is routed to the headsets. This
system provides for secure communications through
interfacing with a voice security system. A frequency
hopping, or anti-jam mode is also available. The UHF
transceiver is powered through a 7.5-ampere circuit
breaker placarded UHF, located on the overhead circuit
breaker panel (fig. 2-7). The UHF radio can be
controlled in either of two ways. Control is selected by
means of the 164 STBY/NORMAL switch (pedestal
extension, fig. 2-12). When NORMAL is selected,
control is by means of the aircraft survivability
equipment/avionics control system (ASE/ACS). When
STBY is selected, control is by means of the UHF
transceiver control panel (fig. 3-3) located on the
pedestal extension.
NOTE
The preset channel selector and manual
frequency selectors are inoperative when the
mode selector switch is set to the GD position.
The receiver-transmitter will be set to the
emergency frequency only.
b.
Standby UHF Control Panel (fig. 3-3), Controls
and Functions. This unit provides standby control, when
the 164 STBY/NORMAL switch located on the pedestal
extension (fig. 2-12) is set to the STBY position.
(1)
T-2-3-A switch.
(a)
Position T. The T position is a
momentary spring-return position enabling input of time
of day (TOD), or for an emergency clock start
(b)
2,3. The 2 or 3 position may be used
to select the 100's digit of the desired frequency in the
normal mode, or the 100's digit of the word of day
(WOD) element for the anti-jam (AJ) mode, and
indicates units digit of frequency (0 through 9) in MHz.
(c)
A. The A position is used to select
the AJ mode of operation.
(2)
Preset channel selector switch. Selects one
of 20 preset channels when mode selector switch is set
to PRE
(3)
Tens digit frequency selector knob and
indicator. Selects tens digit of frequency (0 through 9).
(4)
CHAN indicator. Displays selected preset
channel number.
(5)
Units digit frequency selector knob and
indicator. Selects units digit of frequency (0 through 9).
(6)
SET switch. Activates the circuitry to store
the selected frequency in the selected preset channel
memory.
(7)
Tenths digit frequency selector knob and
indicator. Selects tenths digit of frequency (0 through
9).
3-5
