1792 VHF Radio
User's Manual
1
1. OVERVIEW
The Model 1792 VHF Radio is a single-channel, fixed-frequency, low-power transmitter intended for
base station operation in an air traffic environment to broadcast audio automated weather observations
from the AWOS 3000. The Model 1792 VHF Radio operates over the frequency range from 117.975 MHz
to 138.000 MHz, and uses DC power (negative ground only). The frequency is programmable over
the specified frequency range with a channel spacing of 25 kHz.
The Model 1792 VHF Radio includes the following items.
Mounting Bracket
— A U-shaped aluminum alloy bracket is used to mount the Model 1792 VHF
Radio in the AWOS 3000 CDP rack.
Power Input Cable Assembly
— A 12" (30 cm) two- core cable terminated at one end by a
two-pin (female contacts) connector mates with the two-pin (male contacts) power connector
at the back of the Model 1792 VHF Radio. The cable provides DC power from the AWOS
CDP rack.
VHF Radio Signal Cable Assembly
— A 36" (90 cm) cable terminated at one end with a male
DB9 connector delivers the VHF voice output and the keying instructions that turn the
transmitter on/off. This cable connects to a female DB9 connector on the side of the Model
1792 VHF Radio.
An RG-58 antenna cable in the AWOS 3000 CDP rack connects the antenna output on the back of the
Model 1792 VHF Radio to the antenna connector on the back of the CDP rack.
