Installation manual
MIDLAND 
4-Pin Round Mic Connector - TGR-SL-CAB4R 
Radio Models 
Pin-out 
Notes 
JP-1 
13-510 
Pin 1 – Mic Input 
Pin 2 – GND 
Pin 3 – N/C 
Pin 4 – PTT 
RADIO SHACK 
RJ-45 Mic Connector - TGR-SL-CABRJ4 
Radio Models 
Pin-out 
Notes 
JP-1 
HTX-212 
HTX-242 
Pin 1 – N/C 
Pin 2 – GND 
Pin 3 – N/C 
Pin 4 – N/C 
Pin 5 – Mic Input 
Pin 6 – PTT 
Pin 7 – N/C 
Pin 8 – N/C 
Speaker audio is available on some 
models. Check your radio manual for 
availability of these signals and add the 
appropriate jumpers. 
SGC 
8-Pin Round Mic Connector - TGR-SL-CAB8R 
Radio Models 
Pin-out 
Notes 
JP-1 
SGC-2020 
Pin 1 – Mic 
Pin 2 – PTT 
Pin 3 – N/C  
Pin 4 – N/C  
Pin 5 – N/C 
Pin 6 – RX Audio 
Pin 7 – Mic GND 
Pin 8 – GND 
TEN-TEC 
4-Pin Round Mic Connector - TGR-SL-CAB4R 
Radio Models 
Pin-out 
Notes 
JP-1 
Pegasus 
Omni VI 
Scout 
Pin 1 – Mic Input 
Pin 2 – GND 
Pin 3 – PTT 
Pin 4 – N/C 
These jumper settings work with most Ten-Tec Mic 
jacks (not just the Pegasus). However you should verify 
that your radio has the same pin-out before installing 
them. 
Check Other Listings for these radios - you may be able 
to use the DIN, PACKET, ACCESSORY, or DATA 
jack 










