Radio Shack PRO-89 Owner's Manual download pdf (Page 31)

USING THE ATTENUATOR

To reduce interference or noise caused by strong signals, you can

reduce the scanner’s sensitivity to these signals. Press

ATT

until

ATT

appears on the display to reduce the scanner’s sensitivity.

Note:

If you turn on this feature, the scanner might not receive

weak signals.

To turn off the attenuator, press

ATT

again.

ATT

disappears from

the display.

TURNING THE KEY TONE ON AND OFF

Each time you press any of the scanner’s keys (except and

LIGHT

), the scanner sounds a tone.

Follow these steps to turn the scanner’s key tone on or off.

1. If the scanner is on, turn

VOLUME OFF/MAX

counterclockwise

until it clicks to turn it off.

2. While you press and hold down the

and

ENTER

keys, turn

on the scanner.

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Radio Shack PRO-89 Owner's Manual Page 31