User's Manual

6888882V04
RCK1000 Owners-Guide-v4.doc
11
Connector data
AMP-CONT Connector
The AMP-CONT connector is a 9-pin D-type female connector used to connect to the
high-power linear amplifier.
Microphone Connector
The microphone connector is located on the radio front panel. The same connector is also used
for connection to the RSS or MRC. The following table lists the functions of the microphone
connector pins.
Pin
Designation
Description
1
SWA+
Power output to the microphone
2
R
X
D
Serial control communication line (input) (connection to RSS or
MRC)
3
TXD
Serial control communication line (output) (connection to RSS or MRC)
4
GND
Ground line
5
MIC AUDIO
Input audio signals generated by the microphone (600  impedance;
100 mV tone is required for full output power)
6
PTT MIC
Activates transmission by short circuit to ground
7
MONITOR
Mutes the speaker before transmission is enabled (short circuit
momentarily to ground to disconnect the speaker)
8
AUDIO OUT
Receive audio output to earphone (600 , 300 mVRMS)
RM-125R Audio Connectors
The audio connectors are located on the lower left part of the radio front panel. An external
speaker and handset can be plugged into both connectors. The following table lists the functions
of the audio connector pins.
Pin
Designation
Description
A
GND
Ground line
B
HANDSET AUDIO
Receive audio output (600 ) to earphone
C
PTT MIC
Activates transmission by short circuit to ground