122SETTING A FREQUENCY2 Lock functionsTo prevent accidental channel changes and unnecessaryfunction access, use the lock function. The transceiver has 2different lock functions.D Frequency lockThis function locks [DIAL] and keys electronically and can beused together with the microphone lock function.➥ Push [SET ] for1 sec. to turn the lock func-tion ON and OFF.• [PTT], [MONI ], [VOL]and [SQL] can be used whilethe channel lock function is inuse. Also, TONE-1, TONE-2,DTMF tones or DTMF mem-ory contents can be transmit-ted from the microphone.➥ Push [VFO/LOCK] for 1 sec. to switch thelock function ON and OFF.D Microphone keypad lockThis function locks the microphone keypad.➥ Push [FUNC] then [ SQLZZ #(16KEY-L)] toswitch the microphone keypad lock functionON and OFF.• Lights orange while the microphone keypad lockfunction is activated.• [PTT], [VFO/LOCK], [MR/CALL], [BANK/OP-TION], [YY], [ZZ], [F-1], [F-2], [DTMF-S] and[FUNC] on the microphone can be used.• All keys on the transceiver can be used.• The keypad lock function is released when thepower is turned OFF then ON again.16KEY-LVFO/LOCKANMLOCKLOCKS E TANMMONIDUPLOWT-SCANTONEPRIOM/CALLSCANV/MHzDIGITAL PRIO AO BUSYMUTENARMIDLOWAppears