Acom 2000R Operating Manual page 10

a) First connect the ground stud of the amplifier (on the rear panel, marked GND) to the station's
grounding system (Fig.2-2).
b) Connect a coaxial cable with a PL-259 plug from the transceiver output to the amplifier rear panel RF
INPUT socket.
If this is the first time you will use a high power ampllifier in your station, pay attention
to the coaxial cable type from the amplifier's output. It must handle the increased
power safely, particularly on the higher frequency bands. We recommend you use
RG213 or better. Check the same about the antenna selector and tuner as well as
the antenna itself (especially multiband 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 connector from the transceiver socket providing "ground on
transmit" to the amplifier rear panel KEY-IN socket.
Your amplifier will not work if KEY-IN is not connected properly.
Transceiver producers give different names to this output and they are for instance TX-GND, SEND,
T/R-LINE, etc. Some transceivers require that "ground on transmit" is implemented via a software
command, or by changing the setting of a switch on the rear panel, or interior of the transceiver. Check
your transceiver's manual.
e) The KEY-OUT socket on the rear panel provides an extra control signal from the amplifier to the
transceiver. It could be used to improve the transmit/receive switching.
If your transceiver has a suitable input which disables transmission, we recommend that you connect it
with a cable terminated in a Phono connector to the KEY-OUT socket of the amplifier. Transceiver
producers give different names to this input and they are for instance TX-INHIBIT, MUTE, LINEAR,
etc. Check your transceiver's manual. Consult your dealer or see the TECHNICAL SUPPLEMENT for
details.
If your transceiver has not such an input don't worry - the amplifier will function normally as well and
then the KEY-OUT may remain unused.
f) Connect the RCU cable to the respective DB-9 type connector on the amplifier rear panel, marked
REMOTE CONTROL, and screw in the knurled screws.
g) The ALC output of the amplifier normally remains unused. In case of need of ALC for your transceiver,
which we do not recommend, you may contact your dealer or see the TECHNICAL SUPPLEMENT.
h) The connector on the rear panel, marked INTERFACE, remains unused until you decide to use the
amplifier with a personal computer or in a local network as described in the TECHNICAL SUPPLEMENT.
C A U T I O N
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