VHF 300 Series Owner’s Manual Getting StartedGetting StartedGarmin GHS Series HandsetsUse a Garmin GHS handset to operate all VHF 300 model radios.PTT (Push-to-talk)—press to exit the currentmenu and return to the Home screen to beginbroadcasting.DISTRESS—lift the spring-loaded door andpress the DISTRESS key to start a DigitalSelective Calling (DSC) distress call if youhave programmed your radio with an MMSInumber.Channel—rotate to change the channel on theradio, or press to select a menu item. Whenon the Home screen, press to access WX(weather) channels (North American modelsonly).CLEAR—press to return to the previous screen when you are in the menu options. This keyalso cancels or mutes an incoming DSC call.DSC—press to display a menu of DSC options. Press again to return to the Home screen.This key only works if you have programmed an MMSI number into the radio (page 14).16/9 (North American models) or 16+ (International models)—press and release to togglebetween Channel 16, your second-priority channel, and your original channel.HI/LO—press to select between local and distant receive settings or to bypass 1 Wtransmission power for some channels.MENU—press to display a menu of configuration options. Press again to return to theHome screen.Volume/Squelch—press to toggle the function of the Channel knob to adjust the volumeand squelch levels.PTTChannelCLEARDSC6/9 or 6+HI/LOMENUVolume/SquelchUSA16DISTRESSREPEAT PA SCAN“‰°Š‹.Œ‘’’ƒˆ‰Š°‹Œ.‘’“’†ˆ‰:‹ŒPM UTCW25DISTRESSPTTChannelCLEARDSC6/9 or 6+HI/LOMENUVolume/SquelchUSA16DISTRESSREPEAT PA SCAN“‰°Š‹.Œ‘’’ƒˆ‰Š°‹Œ.‘’“’†ˆ‰:‹ŒPM UTCW25DISTRESS