7
2-4. Connections
Connection to your station must be accomplished in the order described below, before you apply
mains voltage to the amplifier.
W A R N I N G
Note that the grounding system may have to withstand currents over 10A
with insignificant voltage drop on it. Therefore, it may be necessary to
improve it considerably, i.e. to become less resistive, with heavier leads and
lower-resistive ground path. The grounding leads should be at least 4mm²
(AWG 11 or SWG 13).
Fig.2-1 Connections
a) First, connect the ground stud of the amplifier (on the rear panel, marked GND) to the stations
grounding system (Fig.2-1).
b) Connect a coaxial cable with a PL-259 plug from the transceiver output to the amplifier rear panel
RF INPUT socket.
C A U T I O N
If this is the first time you will use a power amplifier in your station, pay attention to
the coaxial cable type from the amplifiers output. It must handle the increased
power safely, particularly on the 10 and 6 meters bands. We recommend, that you
use RG213 or better. Check the same for the antenna selector and tuner as well as
the antenna itself (especially multi-band trap antennas).
c) Connect a coaxial cable from the amplifier output (on the rear panel, marked RF OUTPUT) with a
PL-259 plug to the antenna selector or tuner or to the antenna for the respective band.
d) Run a cable terminated in a Phono (RCA) connector from the transceiver socket providing ground
on transmit to the amplifier rear panel KEY-IN socket.
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