Hi @derrick.beard:
I have the same set-up as you, and have both Packet and VaraFM working correctly; both with the 1200 bps and 9600 bps DigiRig cables from the radio data jack to the DR Mobile, and on two separate FTM-500’s, so there’s hope
Here are the radio settings I’m using for you to compare, recognizing not every setting is relevant:
RX Menu #15 FM Bandwidth
Wide
Data Menu #69 COM Port:
Speed 9600
Output Packet
WP Format NMEA 9
WP Filter ALL
Data Menu #71 Data Speed
APRS 1200 bps
Data 1200 bps (I use 9600, but it’s cable dependent - most set-ups are 1200 bps)
The thread is getting long, so I may have missed it, or not comprehending the issue… Have you used another radio to listen to the transmit signal from the FTM-500, confirming the status of the transmit audio?
Steve VE7IIF