 7 Digital Ground

 8 TD Signal in

10 RD Signal out

12 RX Ground

16 PTT

17 COS

19 TX Ground

DB-25 Male

\ 13 12 11 10 09 08 07 06 05 04 03 02 01 / 
 \ 25 24 23 22 21 20 19 18 17 16 15 14  /

 / 14 15 16 17 18 19 20 21 22 23 24 25  \
/ 01 02 03 04 05 06 07 08 09 10 11 12 13 \

