Icom ic-751a Instruction Manual page 18

(§)
RECEIVER INPUT [RECEIVE
ANT
INl This
is
an input jack
which connects to the
receiver
RF
stage.
©TRANSVERTER
JACK
[X-VERTER]
©SPARE
JACK
©GROUND
TERMINAL
©KEY
JACK
©EXTERNAL
SPEAKER JACK
©ACCESSORY
SOCKET
©DC
POWER SOCKET
[DC
13.8V]
©
IC-EX309
(OPTIONAL)
INTERFACE
UNIT
CONNECTOR
POSITION
ANT
Connect
a suitable transverter
to
this
jack for
operation on
VHF/
UHF
frequencies.
The output
is
approximately
30m
V.
This jack
is
not
used.
It
may
be useful for
connecting
a
personal
accessory.
To
prevent
electrical
shocks,
TVI, BCI and other problems, be
sure
to
ground
the
equipment
through the
GROUND
TER-
MINAL.
For
best
results,
use the
heaviest
gauge wire or strap
available
and
make
the connection
as
short as possible.
For
CW
operation,
connect
a
CW
key using the supplied standard
1/4
inch,
3-conductor
plug.
The
terminal voltage
from
external
electronic
keyers
must
be
less
than
0.4 volts
DC.
When
using the
IC-751A
internal
iambic keyer,
connect an iambic
keyer paddle
using the supplied 1/4 inch,
3-conductor
plug.
See
SECTION
4
-
5 and 6
-
4
for
more
information.
Connect an
external
speaker
to this jack,
if
required.
Use
a
speaker
with an
impedance
of
4
~
16
ohms
and
remember
the
built-in
speaker does not function
when
using the
EXTERNAL SPEAKER
JACK.
This socket provides
signals
such
as
T/R
switching, receiver
output,
modulation output,
etc.
Refer to
SECTION
5
-
6
for
more
informa-
tion.
Connect
the
DC
power
cable
from the IC-PS35
internal
power
supply, the
IC-PS30
or
IC-PS15
external
power
supply or other
suitable
supply. Refer to
SECTION
4
-
6
for
more information.
This position
is
for the installation
of the
DP-25 connector from the
optional
IC-EX309
interface unit.
@1C-PS35 (OPTIONAL)
AC POWER
SUPPLY
SOCKET
POSITION
This position
is
for the
installation
of the
AC
power
socket
when
the optional
IC-PS35
internal
power
supply
is
used.
-
14
-