Rear Panel Connections - Icom IC-701 Instruction Manual

4-3 REAR PANEL CONNECTIONS
6) RECEIVER INPUT TERMINAL
@ RECEIVER ANTENNA
OUTPUT TERMINAL
@ANTTENA CONNECTOR
@EXTERNAL SPEAKER JACK
@KEY JACK
@FUSE HOLDER
@ GROUND TERMINAL
39. RECEIVER INPUT TERMINAL
This is an input terminal which is connected directly to
the receiver.
40. RECEIVER ANTENNA OUTPUT TERMINAL
This is a terminal to which received signals from the
~ antenna connector are conducted after the signal passes
through the transmit/receive antenna switching circuit.
Usually the receiver IN and OUT terminals are jumpered.
The receiver antenna output terminal is usually used when
another receiver is used or a pre-amplifier is connected to
the IC-701.
41. ANTENNA (ANT) CONNECTOR
This is used to connect the antenna to the set. Its
impedance is 50 ohms and connects with a PL 259
connector.
42. 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.
43. KEY JACK
For CW operation, connect the key here. For electronic
keying the terminal voltage must be less than 0.4V DC.
44. FUSE HOLDER
This holds the fuse for the DC power circuit. If the fuse
is blown, replace it with.a new 20 Amp fuse after checking
the cause. Open the fuse holder with a Phillips head driver.
4)SCOPE TERMINAL
@TRANSVERTER
TERMINAL
@ ACCESSORY SOCKET
POWER SOCKET
45. GROUND TERMINAL
To prevent electrical shock, TVI, BCI 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 possible and make the connection as short as
possible, even in mobile installations.
46. POWER SOCKET
Connect the DC power cord or cable from the !C-701PS
or suitable DC source to this connector.
47. ACC (ACCESSORY) SOCKET
Accessories and controls can be used with the IC-701 and
connected to the ACC socket on the rear panel. NOTE:
Pins 14-24 are terminals for digital control and are con-
nected to the input terminal of the C-MOS IC. By no
means apply any voltage not within the range of —0.5 to
+5 Volts. For details, refer to page 20.
48. X-VERTER (TRANSVERTER) TERMINAL
VHF and UHF operation using a suitable transverter with
the IC-701 is possible. This terminal is for Transverter
connection. The output is a few milliwatts. Refer to the
tranverters instruction for recommended hookup.
49. SCOPE TERMINAL
This terminal brings out the 9.011MHz IF signal from the
mixer in the receiver. Not only observation of the received
signal, but also of signals of a the selected band width are
possible by using a panadaptor or panascope.
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