Once you program your scanner, you can protect it from accidental program changes by turning on the key lock feature. When the keypad is locked, the only controls that operate are FUNC, õ/î, SQ, and VOL.
You cannot activate the key lock while you are entering a frequency into a channel.
1.To turn on the key lock, press FUNC and then õ/î.
Key locked. appears for about 1 second. Key locked. appears when you press any key after locking the keypad, and the scanner sounds the low pitched Invalid tone.
2.To turn off the key lock, press FUNC and then õ/î. The scanner beeps three times and Key unlocked. appears in the scanner's display.
TURNING THE KEY TONE ON AND OFFThe scanner is preset to sound a tone each time you press one of its keys (except õ/î). You can turn the key tone off or back on.
1.Press and hold FUNC for about 2 seconds. The menu screen appears.
2.Press 8 and then 2 to select
2:Key Tone.3.Press 1 to select 1:Key Tone On, or press 2 to select
2:Key Tone Off.56