Our local emcomm group practices sending digital messages through the local VHF-FM repeater.
That means you're not using 9600 baud data, probably AFSK packet or other soundcard data mode.? ?So that translates you're not bound to using a data port.? If you go in through the mic jack you should be able to encode a PL tone.
Mark K5LXP
Albuquerque, NM