749OTHER FUNCTIONS■ Beep tonesYou can select to have confirmation beeps sound at the pushof a switch. The output level can be adjusted within 32 levelsor to the related level of the volume. (p. 58)You can select silent operation by turning beep tones OFF.(p. 59)These can be selected in set mode.■ Dial speed accelerationThe dial speed acceleration automatically speeds up the tun-ing dial speed when rotating the [DIAL] rapidly.This function can be turned ON and OFF in set mode. (p. 60)■ Lock functionThe lock function prevents accidental frequency changes andaccidental function access.➥ Push [CALL/TV LOCK] for 1 sec. to toggle the lock functionON and OFF.• [PWR], [VOL], [SQL] and [PTT] can still be accessed while thelock function is ON. (default)D Key lock effectWhile the lock function is ON, [PWR], [VOL], [SQL] and [PTT]can still be accessed. Accessible switches can be set to 1 of 4groups in expanded set mode 1. (p. 63)• “NORMAL” : [PWR], [VOL], [SQL] and [PTT] are accessible.• “NO SQL” : [PWR], [SQL] and [PTT] are accessible.• “NO VOL” : [PWR], [VOL] and [PTT] are accessible.• “ALL” : [PWR] and [PTT] are accessible.FMSKIPPLock indicationooOTHER FUNCTIONS