NOTE - The TG-UV2 does not meet the legal requirements of the FRS/GMRS rules.
Channel spacing is 25 kHz, with a jump from channel 7 to channel 8.
But set the 'Channel step'(F+0+1) to 12.5 kHz to hit the exact frequencies.
You can even program-in CTCSS and DSC codes for both receive (using F+2, BAND to choose mode, UP/DOWN) and transmit (using F+3, BAND to choose mode, UP/DOWN). Tables are in the manual (page 10 and 11).
Keep the Receive codes off if you simply want to listen-in to all local transmissions.