104 BASIC OPERATION Call channel programmingThe call channel switch is used to select Channel 9 by de-fault, however, you can program your most often-used chan-nel in each channel group for quick recall.q Push [CH/WX•U/I/C/L ] for 1 sec. toseveral times to select the desiredchannel group (USA, INT, CAN) tobe programmed.w Push [16•9 ] for 1 sec. to select thecall channel.• “CALL” and call channel numberappear.e Push [16•9 ] again for 3 sec. (until along beep changes to 2 short beeps)to enter call channel programmingcondition.• Call channel number to be programmedflashes.r Push [Y]/[Z] to select the desiredchannel.t Push [16•9] to program the displayedchannel as the call channel.• The call channel number stopflashing. Lock functionThis function electronically locks all switches (except for[PTT], [SQL•MONI ] and [Hi/Lo• ]) to prevent accidentalchannel changes and function access.➥ Push [Hi/Lo• ] for 1 sec. to turn the lock function ONand OFF. Signal strength indicatorfunctionThe received signal strength level is indicated by number ofbars as below.This indicator can be hidden by using the set mode (p. 20) ifdesired. Monitor functionThe monitor function releases the noise squelch mute tocheck the volume level. See p. 18 for details of the monitorswitch action.➥ Push [SQL•MONI] for 1 sec. to activate the monitor function.• “ ” appears and audio is emitted.IndicationStrong Middle Weak No signal orvery weakSignalstrengthAppears while the lockfunction is used.