I am trying to use my d700a with yaac or another aprs program to receive and transmit aprs packets. Everything is set correctly and I can receive packets correctly. However I cannot transmit. The software is set up correctly but my beacon does not get transmitted, neither can I transmit if I hit the transmit button. Is there some special setting that I have to set in my radio to enable transmission of packets? This is only apparently a problem if I use the built-in tnc because if I connect an external tnc everything works fine.
I would appreciate any help to get me going. Thanks in advance.
