Connectors; Microphone Connector J1; Antenna Connector J2; Accessory Connector J3 - Motorola MICOM-2E ALE Owner's Manual

Connectors

Microphone Connector J1

The microphone connector is located on the lower part of the radio front
panel. Table 1 lists the functions of the microphone connector pins.
Table 1. Connector J1, Pin Connections
Pin Pin Name
No.
1 SWA+
2 RXD
3 TXD
4 GND
5 MIC AUDIO
6 PTT MIC
7 MONITOR
8 AUDIO OUT

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.

Accessory Connector J3

The accessory connector J3 is located on the radio rear panel. It is
intended for use with external accessories such as: modem, linear
amplifier, phone patch, etc.
The user can use the 25-pin D-type plug to make his own required
connections or he can use the Interface cable FKN4403 (same as S809
option) when Morse key and headphones are needed to be connected
by their standard connectors. Also, the user can utilize FLN2271 if he
needs to connect up to four devices. Table 2 lists Connector J3, Pin
Connections.
Description
Line used to power up the microphone
Serial communication line
Serial communication line
Ground line
Input audio signals generated by the microphone
(600 Ohms impedance, 100 mV 1 KHz tone is required
for full output power).
Activates transmission by short to ground.
Line which mutes the speaker before transmission is
enabled (short momentary to ground to open speaker).
Receive audio 600 Ohms (300 mVRMS)
Installation
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