Plessey PRC 320/1 - Construction; Assembly Details

The radio can be operated with а headset, handset or
morse key plugged in direct, or connected via a
harness adaptor into the vehicle harness and operated
through a control, radio set, local/remote (see
Chapter 3). In both cases the radio is connected to
the vehicle whip antenna.
CONSTRUCTION
1.7 Тһе transmitter/receiver (RT220/1) is contained
in a sealed light alloy case. All controls are
mounted on the front panel and external connectors on
the top and rear panel. Projections around the front
and rear panels protect the controls and connectors.
The RT320/1 is mounted on a lightweight carrier and
the battery is clipped to the bottom of the case of
the transmitter/receiver.
The manpack whip antenna comprises eight sections of
tubing threaded on а cord to facilitate assembly.
When assembled, it has an overall length of 2.4m and
is fitted to the RT320/1 using the antenna adaptor.
The whip antenna can also be used with a 5.4m mast
and adaptor to provide a 7.9m vertical antenna for
ground station use. Тһе 5.4m mast consists of six
tubular fibreglass sections (approximately 1m in
length) together with supporting guys and other
accessories. When dismantled, it can be packed into
a reinforced fabric case for ease of transportation.
Assembly details are shown in Fig.8 (page 27).
The vehicle whip antenna comprises four sections of
Spring steel tubing which зсгем together. When
assembled, the antenna has an overall length of 4m
and is fitted, via an adaptor, to a sprung base
mounted on the vehicle. А 2m antenna can be obtained
by omission of the top section of the tubing.