Radio Shack 21-1576 Owner's Manual
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Radio Shack 21-1576 Owner's Manual

Radio Shack 21-1576 Owner's Manual

Deluxe chrome-faced 40-channel mobile cb with weather alert
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21-1576_rsj_012604.fm Page 1 Monday, January 26, 2004 11:39 AM
www.radioshack.com
OWNER'S MANUAL —
Please read before using this equipment.
CH9/NOR/CH19 (Page 6)
Signal Meter (Page 10)
Microphone Jack
UP/DN (Page 6)
Microphone
OFF/VOLUME
SQUELCH (Page 6)
SWR CAL (Page
10)
Mounting hardware
Thank you for purchasing the RadioShack 40-Channel Mobile CB with Weather Alert. It
provides for communication on the citizen's radio band, lets you tune to local and national
weather service broadcasts, and lets you connect an optional PA speaker to use the public
address function. You can monitor the sound of CB or weather alert over a PA system while in
PA monitor mode. It has the maximum legal power output for the greatest available range, and
a built-in PLL (phase-locked loop) frequency synthesizer provides consistent, exact tuning.
CB radio provides hours of fun and entertainment! Listen and talk to people from all over the
country while traveling, and make new friends along routes that you regularly travel. It is also a
great way to keep informed of local emergencies, such as traffic accidents, road blocks,
weather alerts and so on.
If an icon appears at the end of a paragraph, go to the box on that page
with the corresponding icon for pertinent information.
o
— Warning
SM
!
!
IMPORTANT
— Caution
Deluxe Chrome-Faced
40-Channel Mobile CB
with Weather Alert
S/RF/SWR/CAL (Page 10)
CB/WX/PA (Page 6)
NB/OFF/MON (Page 10)
DUAL/OFF (Page 7)
MIC GAIN (Page 7/
13)
RF GAIN (Page 6)
Mounting Bracket
Microphone Holder and
mounting hardware
DC Cable
©
2004 RadioShack Corporation.
All Rights Reserved.
RadioShack and RadioShack.com
are trademarks used by
RadioShack Corporation.
Ô
— Note
21-1576
Rotate to tune to
a channel

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Summary of Contents for Radio Shack 21-1576

  • Page 1 21-1576_rsj_012604.fm Page 1 Monday, January 26, 2004 11:39 AM Deluxe Chrome-Faced 40-Channel Mobile CB www.radioshack.com with Weather Alert OWNER’S MANUAL — 21-1576 Please read before using this equipment. CH9/NOR/CH19 (Page 6) S/RF/SWR/CAL (Page 10) Signal Meter (Page 10) CB/WX/PA (Page 6)

  • Page 2: Table Of Contents

    21-1576_rsj_012604.fm Page 2 Monday, January 26, 2004 11:39 AM BEFORE USING YOUR RADIO CONTENTS Before Using Your Radio .... 2 Mount the Microphone Holder OUNT THE ICROPHONE OLDER Mount the CB ......2 You can attach the microphone holder to either side of the Connect the Microphone ..

  • Page 3: Connect The Microphone

    21-1576_rsj_012604.fm Page 3 Monday, January 26, 2004 11:39 AM 2. At the marked positions, drill a hole slightly smaller than the mounting screws. Do not drill into objects behind the mounting surface. 3. Secure the mounting bracket to the mounting surface with the supplied screws and lockwashers.

  • Page 4: Connect To Vehicle Battery Power

    21-1576_rsj_012604.fm Page 4 Monday, January 26, 2004 11:39 AM • as far as possible from sources of electrical noise. • vertically. 1. Follow the antenna’s mounting instructions. 2. Route the antenna cable to the CB radio and connect it to the ANT. jack. ANT.

  • Page 5: Setup As A Base Station

    21-1576_rsj_012604.fm Page 5 Monday, January 26, 2004 11:39 AM ETUP AS A TATION CAUTION This CB can be used as a base station with a DC power Most 12-volt DC power supplies source. Your local RadioShack store carries a wide plug into a standard AC outlet to selection of base station antennas, coaxial antenna cable, produce DC power.

  • Page 6: Connect Speakers

    21-1576_rsj_012604.fm Page 6 Monday, January 26, 2004 11:39 AM ONNECT PEAKERS You can connect an external CB speaker or PA speaker to your CB. A CB speaker provides greater clarity. A PA speaker lets you use the CB as a public-address system. EXT SP PA SP External Speaker...

  • Page 7: Transmitting

    21-1576_rsj_012604.fm Page 7 Monday, January 26, 2004 11:39 AM 1. Rotate OFF/VOLUME clockwise to turn on the CB. Ô Ô NOTE 2. To decrease CB sensitivity, slowly rotate SQUELCH • If the CB picks up partial or very clockwise until the hissing sound stops. To increase weak transmissions, continue to sensitivity, rotate SQUELCH counterclockwise.

  • Page 8: Common 10-Codes

    21-1576_rsj_012604.fm Page 8 Monday, January 26, 2004 11:39 AM 10-C OMMON ODES Citizen's band operators have largely adopted the following 10-codes for standard questions and answers. These codes permit faster and more precise communication in noisy areas. This table lists codes adopted by the Associated Public-Safety Communications Officers (APCO).

  • Page 9: Cb Operation Tips

    21-1576_rsj_012604.fm Page 9 Monday, January 26, 2004 11:39 AM CB O PERATION Business • Truck drivers and delivery personnel can learn road and traffic conditions and get assistance in locating destinations. A CB is also good company on long road trips.

  • Page 10: Reducing Noise

    21-1576_rsj_012604.fm Page 10 Monday, January 26, 2004 11:39 AM • The number of nearby CBs operating on the same channel. • standing wave ratio (SWR) between the antenna and the CB. EDUCING OISE Because your CB is exceptionally quiet, any noise you hear is probably from an external source in your vehicle, such as the alternator, another radio, or spark plugs.
  • Page 11 21-1576_rsj_012604.fm Page 11 Monday, January 26, 2004 11:39 AM The SWR value takes into account the actual frequency of the RF signal transmitted. Therefore, you will get a different SWR reading from one CB channel to another. Almost all CB transmissions fall within an acceptable range. However, for optimum radio performance, we recommend that you fine tune the antenna's system based on the channel you use most.

  • Page 12: Listening To The Weather Band

    21-1576_rsj_012604.fm Page 12 Monday, January 26, 2004 11:39 AM LISTENING TO THE WEATHER BAND Your CB comes preprogrammed with seven weather channels that are allocated by the Federal Communications Commission (FCC) for use by the National Oceanographic and Atmospheric Administration (NOAA). NOAA broadcasts your local forecast and regional weather information on one or more of these channels in your area: Frequency (MHz)

  • Page 13: Using Public Address Mode

    21-1576_rsj_012604.fm Page 13 Monday, January 26, 2004 11:39 AM When your local weather station broadcasts a severe Ô Ô NOTE weather alert, the CB sounds a tone corresponding to the alert type and flashes.Ô WX/ALERT • Because of atmospheric conditions, sometimes the Alert Type You Hear signal your radio received might...

  • Page 14: Replacing The Fuse

    21-1576_rsj_012604.fm Page 14 Monday, January 26, 2004 11:39 AM 3. Set This indicates you are NB/OFF/MON MON. monitoring a CB channel over a PA system. 4. Rotate the knob on the front of the radio or press on the microphone to change the channel. UP/DN REPLACING THE FUSE The CB’s in-line fuse protects it from power surges and...

  • Page 15: Troubleshooting

    21-1576_rsj_012604.fm Page 15 Monday, January 26, 2004 11:39 AM TROUBLESHOOTING Ô Ô NOTE If your CB is not working as it should, follow the suggestions Care below to see if you can eliminate the problem. If the problem persists, take your CB to a RadioShack store for assistance. Keep your CB dry;...

  • Page 16: Specifications

    This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. RadioShack Customer Relations, 200 Taylor Street, 6th Floor, Fort Worth, TX 76102 12/99 01A04 21-1576 Printed in China UTZZ01367ZZ...

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