Rear Panel - Icom IC-R71A Instruction Manual

4-2 REAR PANEL
@LOW BAND-——————_——_"»% <:
ANTENNA nr
TERMINAL
(ANT 1)
39. MUTE TERMINAL
When you wish to use the set together with a transmitter or
transceiver, ground this terminal in the transmit mode, and
the set is muted.
40. EXTERNAL SPEAKER JACK
When an external speaker is used, connect it to this jack.
Use a speaker with an impedance of 8 ohms. When the
external speaker is connected, the built-in speaker does
not function.
41. FUSE HOLDER
This holds a fuse for the AC power circuit. If the fuse
is blown, replace it with a new 1 Amp fuse for 100/117V
operation, or 0.5 Amp fuse for 200/220/235V operation
after checking the cause. Open the fuse holder with a
Philips head screwdriver.
42. AC POWER SOCKET
For connection of the supplied AC power cable.
43. LOW BAND ANTENNA SWITCH
Switches the low band (1600KHz and below) antenna
terminals; ANT 1 (4) LOW BAND ANTENNA TERMINAL)
for a high impedance antenna such as a long wire antenna,
and ANT 2 (@ 50 ohm ANTENNA CONNECTOR) for a
50 ohm coaxial cable.
44. SCOPE TERMINAL
This terminal brings out the 70.4515MHz IF signal from
the mixer in the receiver. Not only observes of the received
—~g8—
@LOW BAND ANTENNA SWITCH
4)RECORDER CONTROL TERMINAL
@ GROUND TERMINAL
@ANTENNA CONNECTOR (ANT 2)
@FUSE HOLDER
@DEXTERNAL
SPEAKER JACK
TERMINAL
: ,
_ &—a—_ OPTIONAL
&| INTERFACE UNIT
CONNECTOR
POSITION
(PLATE B)
@AC POWER SOCKET
signal, but also these signals of a selected band width are
possible by using a panadaptor or panascope.
45. RECORDER CONTROL TERMINAL
This terminal is grounded when the squelch is opened.
This can be used to controlled a tape recorder so that the
recorder works only when the squelch is opened and a
signal is received.
46. LOW BAND ANTENNA TERMINAL (ANT 1)
For connection of a low band antenna to receive 1600KHz
and below. When operating frequency goes to 1600KHz
and below, the antenna terminal will be changed from@
ANTENNA connector to this terminal automatically.
(When the LOW BAND ANTENNA SWITCH is set at
the ANT 1 position).
47. ANTENNA CONNECTOR (ANT 2)
This is used to connect the antenna to the set. Its imped-
ance is 50 ohms and connects with a PL-259 connector.
48. GROUND TERMINAL
To prevent electrical shock, and other problems, be sure to
ground the equipment through the GROUND TERMINAL.
For best results use as heavy a gauge wire or strap as pos-
sible and make the connection as short as possible.
49. OPTIONAL INTERFACE UNIT CONNECTOR
POSITION (PLATE B)
This position is provided to install the connector of the
optional interface unit.