Unfortunately, I’m doubting that I can modify the device. We’ve got a FlightFeeder from FlightAware, and since the case is sealed, and there’s no access to the SD card, I can’t stick the card into my PC to modify it there. I haven’t tried SSH into it yet, so I don’t know if they’ve enabled that or not. I just got the FlightFeeder yesterday for our EAA Chapter hangar, and tonight while I was there for our spaghetti dinner, I configured it, but we’ve got to get a ladder out to the airport to mount the antenna. For now it is running, and sitting inside the hangar. Because of work, I probably won’t be able to get to the hangar for a couple weeks, but next time I do, I’ll try to SSH and see what I get.
It would really be nice if FlightAware had the ability to display only tail numbers on your preferred list.