Icom IC-751A - Microphone; 5- Cw Key; Power Supply

4-4 MICROPHONE
The supplied HM-36
electret condenser hand microphone
or
optional SM-8
or
SM-10
desk microphone may be used.
Merely plug
it
into the
MICROPHONE CONNECTOR on the front panel.
If
you
wish to use a
different microphone, make certain it has the proper
output
level.
Particular
care must be
exercised when wiring
a
different
microphone since the transceiver internal
electrical switch-
ing
system is
dependent upon the correct
connections.
See
SECTION 3
-
1
FRONT PANEL Item
®
for MIC
CONNECTOR
connections.
4-5
CW KEY
For CW
operation, connect a CW
key
to
the
KEY JACK
using the
supplied standard 1/4
inch,
3-conductor plug. See
the diagrams
for
connection details.
Note
that the keyed voltage
when switching with
semiconductors or
relays
with resistors in the circuit
must
be
less that 0.4
volts.
4
-
6
POWER SUPPLY
When an AC
power
supply is
required,
the IC-PS35
internal power
supply, or
the IC-PS30 or
IC-PS15
external power
supply with
matching
size and style
is recommended.
CAUTION: Voltages greater than 15 volts DC may damage this
transceiver. Check
the
source voltage before
con-
necting
the
power cable when using with non-ICOM
AC power supplies.
•AC
OPERATION WITH THE IC-PS30
-
16
-