Radio Shack 20-164 manual Keytones and Keylock, Backlight and Contrast, To set the keytone

Keytones and Keylock

The scanner sounds a tone each time you press a key. To prevent accidental changes, you can lock the keypad.

To set the keytone:

1.Turn on the scanner. “Multi-system Trunking Scanner” appears.

2.While “Multi-system Trunking Scanner” appears, press 1 to turn on the keytone or 2 to turn it off.

To lock the keypad:

1.Press FUNC then KEY/LIGHT. “Key locked” appears briefly and the keypad is locked.

When locked, the only controls that operate are FUNC, LIGHT/KEY, SQ, and VOL.

2.To unlock the keypad, press FUNC then KEY/LIGHT again. “Key unlocked” appears.

Backlight and Contrast

Your scanner features a backlit keypad and display for easy viewing. You can select from three backlight modes:

Normal – Press LIGHT to activate the backlight.

Keypress – Press any key on the keypad to activate the backlight.

Ignore – Keypress mode, but the scanner ignores the function of the first key pressed to activate the backlight.

The light remains on for a set time after the last button is pressed.

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