TM 1-1510-224-10
(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).
(8)
MEMORY
indicator.
Displays
the
operating frequency when READ switch is depressed.
(9)
Hundredths digit frequency selector knob
and indicator. Selects hundredths digit of frequency (0
through 9).
(10)
READ
switch.
When
depressed,
MEMORY indicator will display operating frequency.
(11)
Squelch switch. The squelch switch,
placarded ON - SQ - OFF, enables and disables squelch
circuits of the main receiver.
(12)
Mode selector switch. Selects mode of
frequency selection.
(a)
GD. The main receiver and
transmitter are automatically tuned to the guard
frequency, and the
guard receiver is disabled.
(b)
PRE. Frequency is selected using
the preset channel selector switch. Also used when
programming the preset channels.
(c)
MAN.
Frequency
is
manually
selected using the frequency selector switches.
(13)
Volume control. Adjusts audio output
volume to headsets.
(14)
Function
selector
switch.
Selects
operating mode.
(a)
OFF. Shuts down equipment.
(b)
MAIN. Enables main receiver and
main transmitter.
(c)
BOTH. Enables main receiver,
main transmitter, and guard receiver.
(d)
ADF. Not used in this installation.
(15)
TONE switch. When depressed, the
TONE switch transmits time of day (TOD), followed by a
1020 Hz tone on the selected frequency. When used in
conjunction with the T-2-3-A switch, it starts the TOD
clock.
1.
TOD/Hundreds/AJ Switch
2.
Preset Channel Selector Switch
3.
Tens Digit Frequency Selector
and Indicator
4.
Preset Channel Indicator
5.
Units Digit Frequency Selector
and Indicator
6.
Set Switch
7.
Tenths Digit Frequency Selector Knob
and Indicator
8.
Memory Indicator
9.
Hundredths Digit Frequency Selector
Knob and Indicator
10.
Read Switch
11.
Squelch Switch
12.
Mode Selector
13.
Volume Switch
14.
Function Selector Switch
15.
Tone Switch
A93FE00D0097 C
Figure 3-3. UHF Transceiver
3-6
