I´m using the Yaesu FT-8800 with the Byonics TinyTrak4 as APRS tracker in my car. There is a menu setting to bind the data jack to a VFO, but transmission is always done using main VFO. So if I talk to someone using the second VFO, the modem will send its beacon to the voice QRG.
Since a few days I´m working on a modification to the rig, but I want to be sure this is really needed. My modification will intercept the communication between the main CPU and the panel CPU and supress the data transmission while in QSO... Its open source - if you are interested have a look at http://github.com/thosch1800/FT8800mod
Question: Does someone know a way around (without any modification)? I wonder if I´m the only one who owns this setup and is not comfortable with it...
EDIT: I want to be able to use my radio like a normal radio - grab the mic and start talking - plus the APRS via TT4. In my opinion it has many benefits: You need only one antenna, only one device, your able to use it like a 'normal' radio.