Having owned a PSR-600, even though it was made by GRECOM, does the TRX-2 support roaming the same way the PSR-600 does? With the PSR you could enter a system and TGID and while mobile you can lock onto a TGID and the radio would follow the needed sites to maintain that lock as you move around the area. Will the TRX-2 do the same? I know the Uniden with GPS turns on and off sites as you have them set-up but if you lock on an ID at one site it will not hold that lock into the next site as the PSR would do.