TM 1-1520-238-10
3-14
3.7.1 Antenna.
The UHF-AM antenna (fig 3-1) is lo-
cated on the bottom center fuselage area and is mounted
directly aft of the doppler fairing.
3.7.2 Controls and Functions.
Controls for the
ARC-164(V) are on the front panel of the unit (fig 3-5). The
function of each control is described in table 3-4.
Table 3-4.
RT-1167C/ARC-164(V) Controls and Functions
Control
Function
Frequency
selector 1
For the RT-1167, manually selects 100’s digit of frequency (either 2 or 3) in MHz.
A-3-2-T selector
switch (RT-1167C
radios only)
A
Selects AJ mode.
3 and 2
Manually selects 100’s digit of frequency (either 2 or 3) in MHz in normal mode or the first
digit of the WOD in the AJ mode.
T
Momentary switch position allows the radio to receive a new TOD. Also used with TONE
button for emergency clock start.
Frequency
selector 2
Manually selects 10’s digit of frequency (0 through 9) in MHz in normal mode, second digit of
the WOD or first digit of net number in AJ mode.
Frequency
selector 3
Manually selects unit digit of frequency (0 through 9) in MHz in normal mode, third digit of the
WOD or second digit of net number in AJ mode.
Frequency
selector 4
Manually selects tenths digit of frequency (0 through 9) in MHz in normal mode, fourth digit of
the WOD or third digit of net number in AJ mode.
Frequency
selector 5
Manually selects hundredths and thousandths digits of frequency (00, 25, 50 or 75) in MHz
and the fifth and sixth digits of the WOD.
Preset channel
selector
Selects and stores one of 20 preset channels in normal mode or the WOD in AJ mode.
CHAN indicator
Indicates selected preset channel. Indicator is blanked when radio is in MANUAL or GUARD
mode.
Function selector
switch
Selects method of frequency selection.
MANUAL
Any of 7,000 frequencies can be manually selected using the five frequency selectors.
PRESET
A frequency is selected using the preset channel selector switch for selecting any one of 20
preset channels as indicated on the CHAN indicator.
GUARD
The main receiver and transmitter are automatically tuned to the guard frequency and the
guard receiver is turned off. Any manually set or preset frequency is blocked out.
SQUELCH ON-OFF
switch
Turns squelch of main receiver on or off.
