Y1-03-0079-1 Rev. B43.0 OPERATING CONTROLS AND INDICATORS3.1 OPERATING CONTROLSAll radio controls are flat panel, push-types located on the front surface of the radio (seeFigure 2.)ON/OFF Press for one (1) second to turn ON, andpress again to turn OFF.VOL Volume (increases audio output levelto maximum)VOL Volume (decreases audio output level).PTT Push-To-Talk activates transmitter whileswitch is depressed. When switch isreleased, radio returns to receive modeautomatically.CHAN 16 Selects operation on Marine Channel 16(Distress/Calling)CHAN 6 Selects operation on Marine Channel 6(Communications/USCG)3.2 OPERATING INDICATORSCHAN 16 The push switch includes a RED lightwhich will be illuminated when the radiois ON and Channel 16 is selected.CHAN 6 The push switch includes a GREEN lightwhich will be illuminated when the radiois ON and Channel 6 is selected.VOL Both of these push switches light upYELLOW when the PTT switch isdepressed - indicates that radio istransmitting.PTT The push switch blinks YELLOW at aslow rate to assist operator in locating thePTT switch in darkness.FIGURE 2: ACR/GMDSS 16/6 SURVIVALRADIO CONTROL PANEL