Units digit frequency selector knob and
indicator. Selects units digit of frequency (0 through 9).
SET switch. Activates the circuitry to
store the selected frequency in the selected preset
Tenths digit frequency selector knob and
indicator. Selects tenths digit of frequency (0 through 9).
operating frequency when READ switch is depressed.
Hundredths digit frequency selector knob
and indicator. Selects hundredths digit of frequency (0
MEMORY indicator will display operating frequency.
Squelch switch. The squelch switch,
placarded ON - SQ - OFF, enables and disables squelch
circuits of the main receiver.
Mode selector switch. Selects mode of
GD. The main receiver and
transmitter are automatically tuned to the guard
frequency, and the
guard receiver is disabled.
PRE. Frequency is selected using
the preset channel selector switch. Also used when
programming the preset channels.
selected using the frequency selector switches.
Volume control. Adjusts audio output
volume to headsets.
OFF. Shuts down equipment.
MAIN. Enables main receiver and
BOTH. Enables main receiver,
main transmitter, and guard receiver.
ADF. Not used in this installation.
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
Preset Channel Selector Switch
Tens Digit Frequency Selector
Preset Channel Indicator
Units Digit Frequency Selector
Tenths Digit Frequency Selector Knob
Hundredths Digit Frequency Selector
Knob and Indicator
Function Selector Switch
Figure 3-3. UHF Transceiver