Installation
121
Antenna Connector J2
The N type antenna connector is located on the rear panel of the transceiver. In transmit mode, it is
used to feed the antenna with the transmit power; and in receive mode it is used to deliver the
received signal from the antenna to the radio.
Accessories Connector J5
The accessories connector is a 44-pin D-type male connector located on the radio rear panel. It is
intended for use with external accessories such as: modem, linear RF power amplifier, phone patch,
etc.
You can use the 44-pin D-type plug to make your own required connections or use the Interface
cable FKN4403 (same as S809 option) to connect Morse key and headphones with standard
connectors. Also, FLN2271 can be used when it is necessary to connect up to four devices. Table 5
lists the pin functions of the accessories connector.
Table 5. Accessories Connector Pin Functions
Pin Designation Description
1 SPKR-
Differential output to the external 8Ω, 8W speaker
2 STOP SCAN Digital control input for stop scan function
3 SPKR+
Differential output to the external 8Ω, 8W speaker
4 EXT RX AUDIO+
Differential received audio output (0 dBm; 600Ω; not controlled by volume)
5 EXT RX AUDIO-
Differential received audio output (0 dBm; 600Ω; not controlled by volume)
6 EXT TX AUDIO+
Differential transmit audio input (600Ω input impedance, 0 dBm is required for
full power)
7 EXT TX AUDIO-
Differential transmit audio input (600Ω input impedance, 0 dBm is required for
full power)
8 PTT IN VOICE Transmission command (short to ground) for voice signals
9 PTT IN DATA Transmission command (short to ground) for data signals
10 PTT IN CW Transmission command (short to ground) for CW (Morse) signals
11 SW A+ Primary DC voltage current limited output (max 1A)
12 DSI/KW CC
BDM – Data serial in/kW amplifier channel change
13 KW ON/OFF kW amplifier power on/off output
14 REV CLOSE LOOP Close the loop of ALC radio (input)
15 RXA Receive input (point-to-point protocol to host/HLC)
16 TXA Transmit output (point-to-point protocol to host/HLC)
17 EX RESET External RESET input (for BDM)
18 GND Ground
19 KW PTT PTT output to kW amplifier
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