3-3190-01004-03 Rev. K Garmin GTN 625/635/650 Pilot’s GuideForewordGettingStartedAudio &Xpdr CtrlCom/NavFPLDirect-ToProcWpt InfoMapTrafficTerrainWeatherNearestServices/MusicUtilitiesSystemMessagesSymbolsAppendixIndex3.3 Com and Nav Frequency Window and TuningCommunication frequencies are selected by using the large and small rightknobs or by touching the value in the standby Com or Nav frequency field andusing the displayed keypad. The standby frequency always appears below theactive frequency. The active frequency is the frequency currently in use fortransmit and receive operations.Once a frequency is selected in the standby field, it may be transferred to theactive frequency by touching the active frequency field.NOTE: The Com window is normally active for adjustment, unless the NAVwindow is made active by pressing the small right knob. The active stateautomatically returns to the Com window after 30 seconds of inactivity.To select a Com or Nav frequency using the small and large right knobs:1. If the tuning cursor is not currently in the frequency window,press the small right knob momentarily. The Standbyfrequency will be highlighted to indicate that it is active forediting.2. Turn the large right knob to select the desired megahertz(MHz) value. For example, the “118” portion of the frequency“118.30”.3. Turn the small right knob to select the desired kilohertz(kHz) value. For example, the “.30” portion of the frequency“118.30”.To select a Com or Nav frequency using the numeric keypad:1. Touch the Standby window.2. A keypad will appear with the current Standby frequencyhighlighted.
