I believe this works hit Manual go to any channel within the bank you want, then hit Function Trunk use the arrow keys to get to the TGID you want. If you want to listen to the TGID hit Function Trunk again once you get to it.
well i live in a county thats have trs and the town i live in ops on that so there pd is anolog so when the fd has a call i want to be able to tune in fast!