46BEEP FUNCTIONThe Beep function provides confirmation of entry, error status, and malfunctionsof the transceiver. We recommend you leave this function ON in order to detecterroneous operations and malfunctions.However, to turn the beep function OFF:1 Enter Menu mode and access Menu No. 2 (BEEP), then press [F].2 Rotate the ENC control to select “OFF”, then press [F] to store the setting.3 Press [MENU] or [PTT] to exit Menu mode.The transceiver generates the following warning beeps even if the beep function isturned OFF.• APO warning beeps • Time-Out Timer warning beepNote: The beep output level is linked to the volume control position.LOCK TYPEYou can select your desired Lock type. “KEY” locks the operational keys, “FRQ”locks the frequencies so that you do not accidentally change them and“KEY.FRQ” locks both the keys and the frequencies.• Manual DTMF and Autodial can still be performed while either lock is active.1 Enter Menu mode and access Menu No. 3 (LOCK), then press [F].2 Rotate the ENC control to select “KEY”, “FRQ” or “KEY.FRQ”, then press [F] tostore the setting.3 Press [MENU] or [PTT] to exit Menu mode.“KEY”: Only the following keys & controls can be operated.PWR/VOL control ENC control PTT FMONI SQL LAMP“FRQ”: Only the following keys can be operated.PWR/VOL control PTT MONI F MENU TONELOW SQL T.SEL PF LAMP• You can still use the ENC control in menu mode.