Radio Shack 21-1177 User Manual
21-117 7.fm Page 1 Thursday, August 5, 1999 8:4 4 AM
Noise-Cancelling Dynamic C B Microphone
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 frequencies spoken directly into the microphone and filters out background noise
from vehicles, wind, the car radio, etc.
The microphone is al so ideal for a mobil e
or outdoor PA system.
Cat. No. 21-1177
FEATURES
Frequency Response
close-up vocal use.
Built-In Acoustic Filter —
and pop noise.
2-Foot Cable with 5-Pin (DIN) Connector
— for easy connection to your CB or
outdoor PA system.
Low-Impedance Operation
use your micr ophone with a wide range o f
equipment.
— optimized for
reduces wind
— lets you
INSTALLING THE
BATTERIES
You need two AAA batteries (not supplied) t o power yo ur mic roph one. We rec ommend alkaline batteries, such as Cat.
No. 23-555.
1. Push the tab on the battery compartment 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
place the batteries.
Note:
briefly when you release the switch on
the microphone’s side.
BATT. LOW
The
indicator lights, re-
BATT. LOW
indicator lights
©
1995 Tandy Corporation.
Radio Shack is a registered trademark used by Tandy Corporation.
All Rights Reserved.
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21-117 7.fm Page 2 Thursday, August 5, 1999 8:4 4 AM
MOUNTING THE CLIP
HANGER
You can hang the microphone on your
CB’s existin
the supplied clip han
To mount the clip han
plate and drill two holes at the desired locations on the ve hicle ’s dashboa rd. Then
use the suppli ed scre ws to mo unt the c lip
han
er on the dashboard.
Caution:
behind the dashboard.
mounting bracket, or use
er and screws.
er, use it as a tem-
Be sure not to drill into objects
CONNECTING THE
MICROPHONE
USING THE
MICROPHONE
Push the switch on t he microphone’ s side
to send a transmission. Release the
switch to rece ive.
USING THE AMP
To use the microphone’s internal preamplifier, set
VOL.
fier. To turn off the amplifier, set the
switch to
Note
transmittin
AMP. ON /OFF
AMP. ON/OFF
to vary the output level of the ampli-
OFF.
VOL.
: The
setting only affects your
volume and only works with
set to ON.
to ON. Adjust
Plug your microphone’s 5-pin connector
into you r tr an s m i ttin
device’s plug.
2
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