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The maximum range and quality of CB radio transmissions 
vary depending on the following conditions:

• The type and quality of antenna used

• The height of the antenna’s mounting location — the 

higher the antenna, the better the signal’s range

• The surrounding terrain — mountains and tall buildings 

limit the range

• Weather conditions

• The number of nearby radios operating on the same 

channel

• Standing wave ratio (SWR) between the antenna and 

the CB.

6417$.'5*116+0)

If your CB is not working as it should, follow these 
suggestions to see if you can eliminate the problem. If you 
cannot, take the CB to your local RadioShack store for 
assistance.

2TQDNGO

5WIIGUVKQP

CB has trouble 
receiving.

Turn transceiver power on.

Microphone connected? Secure connections.

Antenna connected? Secure connections.

Too much squelch? Adjust as needed.

Radio not on operating channel? Switch to an 
active channel.

Be sure PA/MON/CB is set to CB.

Adjust VOLUME.

Adjust RF GAIN.

CB has trouble 
transmitting.

Turn transceiver power on.

Antenna connected? Secure connections.

All connections free of corrosion? Clean and 
tighten.

Microphone connector loose? Firmly press 
microphone connector into jack.

Be sure PA/MON/CB is set to CB.

Radio not on operating channel? Switch to an 
active channel.

PUSH TO TALK fully pressed? Press 
completely.

±

"

016'

"

±

"

Your CB radio’s transmission 
range is generally line-of-sight.

Summary of Contents for 21-1706

Page 1: ...sired location 2 At each marked position drill a small starter hole 2146 06 If an icon appears at the end of a paragraph go to the side head box on that page with the corresponding icon for pertinent...

Page 2: ...ate mark the positions for the screw holes on the mounting surface 2 In each marked location drill a small starter hole 3 Mount the bracket to the mounting surface with the supplied 5 mm bolts spring...

Page 3: ...he ANTENNA jack on the back of the transceiver To take advantage of your radio s maximum range adjust the antenna s Standing Wave Ratio SWR using an SWR meter not supplied Follow the instructions supp...

Page 4: ...ceiver insert the speaker cable s plug into EXT SPKR on the back of the CB 100 6 0 2 52 4 The PA speaker should have an impedance of 8 ohms and be able to handle 10 watts of power The speaker cable mu...

Page 5: ...cast Even though some earphones headphones let you hear some outside sounds when listening at normal volume levels they still can present a traffic hazard 75 0 8 66 4 219 4 1 Connect the red wire with...

Page 6: ...l help you get more enjoyment from your CB 4 8 0 64 05 55 105 0 756 0 537 1 Set PA MON CB to CB 2 Turn SQUELCH fully counterclockwise 3 Turn RF GAIN fully clockwise R 9 40 0 R Use extreme caution when...

Page 7: ...0 00 To select the emergency channel 9 press the channel selector once Press again to select channel 19 or flashes Press one more time to return to the previous selected channel You can also select Ch...

Page 8: ...rate heading information Calibrate the compass anytime you move it or whenever distortion continuously appears Before calibration peel off the backing on one side of the supplied tape and attach the t...

Page 9: ...6 6 You can adjust the backlight by rotating DIMMER To turn off the backlight rotate DIMMER fully counterclockwise 64 05 55 10 1746 5 Follow these guidelines for radio courtesy when using your CB Wai...

Page 10: ...0 12 Stand by 10 13 Report road weather conditions 10 14 Information 10 15 Message delivered 10 16 Reply to message 10 17 En route 10 18 Urgent 10 19 Contact _________ 10 20 What is your location 10 2...

Page 11: ...ou cannot take the CB to your local RadioShack store for assistance 2TQDNGO 5WIIGUVKQP CB has trouble receiving Turn transceiver power on Microphone connected Secure connections Antenna connected Secu...

Page 12: ...accept any interference received including interference that may cause undesired operation CB does not work at all Power connected Secure connections Microphone connected Secure connections Fuse need...

Page 13: ...icle s ignition or electrical system Here are a few hints to help you reduce or eliminate such noise Make all CB power and antenna wires as short as possible Route the power wires away from the antenn...

Page 14: ...e a malfunction and might invalidate its warranty 4 2 0 6 75 The CB s 2 amp in line fuse helps protect your CB from power surges and short circuits When replacement is required use a 2 amp slow blow g...

Page 15: ...S WARRANTY INCLUDING BUT NOT LIMITED TO ANY DAMAGES RESULT ING FROM INCONVENIENCE LOSS OF TIME DATA PROPERTY REVENUE OR PROFIT OR ANY INDIRECT SPECIAL INCI DENTAL OR CONSEQUENTIAL DAMAGES EVEN IF Radi...

Page 16: ...ional antenna of your choice RadioShack carries just the cable you need For the best possible reception at home or on the go you can connect an optional external antenna RadioShack carries a completel...

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