accessory port

After several months, and fully dedicating a weekend to this project, I have pieced together from various sources (especially this forum), enough information to make an Accessory Port programming cable for the Motorola GM/CDM radios that will work with the generally available FTDI based RIB-less...

Help required again, I'm having a lot of trouble finding, what should be simple and available information on the pinouts for the accessory port on the DP4800. Can anyone one help? Thank you

Hi guys, Have had an intermittent issues on my Maxtrac. It's a 16pin logic board model and is setup for use with a vehicle VHF repeater. Pin 14 is set to detect a carrier with or without PL. The extenders are made from HT1000. I have made several of these and haven't had any issues with them...

I am trying to use the accessory port on an XPR 8400 to send/receive audio to an emergency call system. The system has a radio interface giving me PTT, COR, TOR, transmit and receive audio and ground. I can make the repeater work this way as analog but need to make it work digitally. I was...