Radio Shack 21-1177 User Manual

Cat. No. 21-1177

Your Radio Shack Noise-Cancelling CB
Microphone is designed for use with your
CB in your vehicle, where background
noise is a problem. It picks up voice fre-
quencies spoken directly into the micro-
phone and filters out background noise
from vehicles, wind, the car radio, etc.
The microphone is also ideal for a mobile
or outdoor PA system.

Frequency Response — optimized for
close-up vocal use.

Built-In Acoustic Filter —  reduces wind
and pop noise.

2-Foot Cable with 5-Pin (DIN) Connec-
tor — for easy connection to your CB or
outdoor PA system.

Low-Impedance Operation — lets you
use your microphone with a wide range of
equipment.

You need two AAA batteries (not sup-
plied) to power your microphone. We rec-
ommend alkaline batteries, such as Cat.
No. 23-555.

1. Push the tab on the battery com-

partment cover in the direction of
the arrow, then lift off the cover.

2. Install the batteries as indicated by

the polarity symbols (+ and –)
marked inside the compartment.

3. Replace the cover.

When the 

 indicator lights, re-

place the batteries.

Note: The 

 indicator lights

briefly when you release the switch on
the microphone’s side.

21-1177.fm  Page 1  Thursday, August 5, 1999  8:44 AM