Icom IC-7700 User Manual

2-9
2
INSTALLATION AND CONNECTIONS
■ Transverter jack information
When2to13.8Visappliedtopin6of[ACC2],the
[X-VERTER]connectorisactivatedfortransverterop-
eration and the antenna connectors do not receive or
transmit any signals.
Whilereceiving,[X-VERTER]connectorcanbeacti-
vatedasaninputterminalfromanexternaltransverter.
Whiletransmitting,the[X-VERTER]connectorout-
puts signals of the displayed frequency at –20 dBm
(22mV)assignalsfortheexternaltransverter.
■ FSK and AFSK connections
The transceiver has a Modem function for RTTY and
PSK. However, if you want to use a PC to operate these
digital modes, it is necessary to prepare the following
interface circuit, or use a similar 3rd party device.
Refer to the instruction manual for the device prior to
connecting it.
D When using the ACC socket or the microphone connector
Transverter connector
PC
８
２
７
６
１
３
５
４
CE B
No connection
No connection
Shield cable
2 k˘：2 k˘ 10 k˘
2 k˘：2 k˘
ACC1
10 k˘
4.7 k˘
4.7 k˘
RTS
GND
10 k˘
(Trimpot)
10 k˘
(Trimpot)
Connection to
COM port of PC
D-Sub25
D-Sub9
Pin 4
Pin 7
Pin 7
Pin 5
Pin 2
Pin 3
Shield cable
Shield cable
Shield cable
Shield cable
CE B
TXD
The sections shown in squares are required
only when Baudot RTTY is used in FSK (RTTY) mode.
(Other digital mode operations such as SSTV or PSK are not required.)
*1 NPN transistor
(2SC1815)
(Rear panel view)
(Front panel view)
¡When connecting to [ACC1]
¡When connecting to [MIC]
*2 switching diode
(1S1588)
*1
*1
*2
*2
A
A
B
B
C
C
D
D
E
E
1
2
3
4
5
6
7
8
B
F
E
D
C
*3 Connect to [C] when using ACC1.
Connect to [F] when using the microphone connector.
Example interface circuit for digital modes
(Not provided by Icom)
*3
Connection to
LINE IN or MIC
IN of PC
Connection to
SP OUT of PC
NOTE:
You cannot operate RTTY
(FSK) operation when you
connect the circuit to the
microphone connector.

Icom IC-7700 Specifications

General

Brand	Icom
Model	IC-7700
Category	Transceiver
Language	English