Radio Shack 21-1706 - Manual (Page 11)

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