Plessey PRC 320/1 - Purpose; Description

PURPOSE
1.2 Although it can be used as a ground station, the
PRC$20/1-100W is primarily a vehicle radio operating
in the SSB mode over the frequency range 2 to 50 MHz.
DESCRIPTION
1.5 In the 100W role the RT320/1 operates as a driver
for the 100W amplifier, the output of which feeds the
antenna via the automatic antenna tuning unit (ATU).
This takes the place of the RT320/1 integral antenna
tuning unit, which in this application is not used.
The PV1518 operates as а control unit and mounting
tray for the ATU and also accepts the 100W amplifier
or the RT320/1. In vehicle installations the ATU is
normally stacked on top of the 100W amplifier and
together mounted on the PV1518, which in turn is
mounted on the shock absorbing mounting tray РУ1317.
The #7320/1, complete with manpack carrier, is
mounted on the vehicle rack, which enables the
RT320/1 to be quickly removed for reversion to the
ОЧ manpack role.
1.4 Operating into the vehicle whip antenna (see Part
1, Chapter Three) the equipment provides reliable
ground wave 558 communication at distances of up to
100km over average rolling terrain. Using sky wave
antennas in ground station applications, as described
in Part 1, the range is several thousand kilometres.
Ав in the 30W station, matching of resonant dipole
configurations is provided solely by the lengths of
the dipole elements. The antenna may then be
connected directly to the output of the 100W
amplifier and the ATU is not necessary.
1.5 Тһе PRC320/1-100W requires a nominal 28V d.c.
supply and operates satisfactorily from a supply in
the range 20V to 327. Те RT320/1 itself can be
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