Radio Shack 20-164 ユーザーズマニュアル

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.

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.

To turn on the backlight:
1.. Hold.down.LIGHT.until.the.light.turns.on..
2.. To.turn.off.the.backlight,.press.LIGHT.

To change the backlight mode:
1.. Turn.on.the.scanner..“Multi-system.Trunking.

Scanner”.appears.

2.. While.“Multi-system.Trunking.Scanner”.

appears,.press.LIGHT.

3.. Press..or..to.select.a.backlight.mode.

and.duration.(seconds)..

Normal

Keypress

Ignore

3

K3

I3

5

K5

I5

10

K10

I10

20

K20

I20

4.. Press.ENT.

To change the display contrast:
1.. Press.MAN.
2.. Press.FUNC.then.9..
3.. Press..or..to.select.the.contrast.
4.. Press.ENT.

The.squelch.and.attenuator.help.you.control.
your.scanner’s.sensitivity..If.you.hear.a.hissing.
sound,.the.scanner.will.remain.on.an.active.
channel,.even.after.a.disconnect.tone.or.a.
stopped.transmission.