7
N O T E
If the power transformer is not readily installed check the Transformer installation
leaflet supplied with it.
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 20A with
minimal voltage drop. Therefore, it may be necessary to improve grounding
system conductivity with heavier conductors and a lower-resistance ground
path. The grounding conductor should be at least 8mm2 (AWG 8 or SWG 10).
Fig. 2-1 Connections
a) First, connect the ground stud of the amplifier (on the rear panel, marked GND) to the station's
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 are using a power amplifier in your station, pay close
attention to the coaxial cable type from the amplifier's three outputs. The cable must
be capable of handling the increased power levels, particularly on the 10m and 6m
bands. We recommend that you use RG213 or better coaxial cables. Consult your
local cable supplier for the appropriate cable selection. This caution applies equally
to the antenna selector, tuner and antennas system as well.
c) Connect a suitable coaxial cable from your antennas to the appropriate amplifier output on the rear
panel, marked ANTENNA 1, ANTENNA 2, and ANTENNA 3, using PL-259 plugs with PTFE insulation.
d) Run a cable terminated with a phono (RCA) connector from the transceiver socket providing a "ground
on transmit" (PTT) control signal to the amplifier rear panel KEY-IN socket.