Codec2 and SM1000 Hardware Howto
See also http://www.rowetel.com/blog/?page_id=3902
SM1000 3.5mm Audio Cable Configuration
SM1000 RJ12 Rig Interface Configuration
Yaesu RJ12 Interface Configuration
Kenwood 8 Pin Microphone Plug Configuration
Kenwood 690s Transceiver and SM1000 3.5mm Audio Cable Harness
