SECTION
5
SYSTEM
INTERCONNECTIONS
5-1
AC
POWER
SUPPLY Refer
to
SECTION
4
-
6
for installation directions.
5-2
EXTERNAL LINEAR AMPLIFIER
The IC-751A
is designed to operate into
a
load with
50
ohms
impedance.
Therefore, any amplifier used must have
a 50 ohm input
impedance for best
efficiency.
•
USING THE
IC-2KL
LINEAR AMPLIFIER
The
optional
500
watt, solid-state IC-2KL linear amplifier may
be
easily connected to
the IC-751A with the cables supplied with the
amplifier in
the same way as
other ICOM transceivers. Refer to the
IC-2KL Instruction
Manual for details.
It is recommended that the ICOM IC-AT500 Automatic Antenna
Tuner
be used when operating with the IC-2KL
and
500
watts
output
(See SECTION
15).
The amplifier
connections
are shown
below.
NOTE;
All
cables
required for
the
interconnec-
tion of the
IC-751A and
the IC-2KLare
supplied
with the
amplifier.
•
USING NON-ICOM
EXTERNAL The RELAY JACK on
the rear panel
of
the IC-751A
supplies an
AMPLIFIERS
output from
a
built-in keying relay for an external amplifier. The
ALC
jack is an input for the automatic level control signal from an
external amplifier.
The specification for the
keying
relay is 50 volts DC
maximum. Do
not exceed
this limit.
The RELAY JACK
is
grounded while the
transceiver
is
in the trans-
mit mode and it opens when the
transceiver returns
to
the
receive
mode.
The output
condition
of
this
jack does not control either
the
transmit or receive function of the transceiver.
-
18
-
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