1-3190-01182-00 Rev. A Garmin GTR 225/225A/225B Pilot’s Guide1.2.2 Tuning LARGE/SMALL Concentric (Cursor)KnobsThe LARGE right and SMALL right knobs are used for tuningfrequencies and data entry.SMALL, Inner KnobLARGE, Outer Knob1.2.3 FLIP/FLOP KeyPress and release the FLIP/FLOP key to switch between theactive (left-most) and standby (right-most) frequency. Switchingbetween Com frequencies is disabled while you are transmitting.1.2.4 Com KeyPress the COM key to return to the Com radio mode.1.2.5 MEM KeyPress the MEM key to recall and toggle between the Com Recentand User Frequency lists.1.2.6 ICS KeyPress the ICS key to toggle display of the ICS settings for IntercomOn/Off, AUX Audio, or the Intercom settings.1.2.7 CLR (Clear) KeyPressing the CLR key erases information, cancels entries, andresets timers.1.2.8 ENT (Enter) KeyPress the ENT key to save selected values, to confirm a prompt,or to save the Standby frequency.