190-01553-01 Rev. AGarmin GTR 200 Pilot’s Guide4GTR 200BASIC OPERATIONPOWER-UPTurn the GTR 200 on by either turning the Power/Volume/Squelch knobclockwise or, if installed, turning on the master switch that powers the radios.COM RADIONew frequencies are first selected as a Standby frequency and thentoggled to the Active side with the Frequency Transfer Key. While viewingthe Standby frequency display, use the LARGE and SMALL knobs on theright side of the GTR 200 to select the desired frequency. Turn the LARGEand SMALL knobs, clockwise to increase and counterclockwise to decreasefrequency values. Standby frequency selections is not inhibited duringtransmit.When connected to a device that provides nearby frequency information,nearby station identifiers will be shown for the selected frequency.Identifier and Type Shownfor the Selected FrequencyCOM Frequency SelectionSelecting a COM Frequency:1) Turn the LARGE Knob to change the value in one MHz increments.2) Turn the SMALL Knob to change the value in 25 kHz increments.3) Press the Frequency Transfer Key to toggle the Standby frequency tothe Active frequency.Adjusting Volume:Turn the Power/Volume/Squelch knob clockwise to increase volumeand counter-clockwise to decrease volume.