MicrophoneHI/LO2PANEL DESCRIPTION3• Push and hold for 1 sec. to activate tri-watch for checkingchannel 16 and the call channel.CALL CHANNEL SWITCH [9•ALL/IND]• Selects the call channel—the call channel is programma-ble, channel 9 being the default. (p. 11)• Push and hold for 1 sec. to enter the standby condition ofa DSC call. (When an optional UX-120 is installed).(pgs. 14, 15)➠ Both “All ships call” and “Individual call” are selectable.CHANNEL 16 SWITCH [16•EMER ]• Selects channel 16. (p. 6)• Push and hold to enter the standby condition for a dis-tress call transmission using the DSC function (when anoptional UX-120 is installed). (p. 13)SQUELCH CONTROL [SQUELCH]• Rotate clockwise to eliminate audio noise. (p. 8)• Activates the built-in attenuator when rotated deep clock-wise. (p. 8)POWER/VOLUME CONTROL [PWR/VOL]Turns power ON and OFF and adjusts the audio outputlevel. (p. 6) CHANNEL UP/DOWN SWITCHES []/[]• Select an operating channel in the selected channelgroup.➠ These switches can be used instead of the transceiver’schannel selector. HIGH/LOW POWER SWITCH [HI/LO]The same function as the transceiver’s front panel.• Toggles between high and low output powers. (p. 9)• While pushing, push the []/[] switches to adjust the displayand control/switch backlighting intensity. (p. 11)