Radio Shack 21-1679 A Manuel D’Utilisation
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• Type and quality of the antenna.
• Height of the antenna’s mounting location (the higher the
• Height of the antenna’s mounting location (the higher the
antenna, the better the signal’s range).
• Surrounding terrain (mountains and tall buildings limit the range).
• Weather conditions.
• Number of nearby CBs operating on the same channel.
Note: Your CB radio’s transmission range is generally line-of-
• Weather conditions.
• Number of nearby CBs operating on the same channel.
Note: Your CB radio’s transmission range is generally line-of-
sight. To ensure maximum range, always keep the battery
pack fully charged or use fresh batteries.
Common 10-Codes
Citizens Band radio operators have largely adopted the 10-
codes for standard questions and answers. These codes permit
faster communication and better understanding in noisy areas.
The following table lists some of the more common codes and
their meanings:
Code
Meaning
Code
Meaning
10-1
Receiving poorly
10-22 Report in person to____
10-2
Receiving well
10-23 Stand by
10-3
Stop transmitting
10-25 Can you contact____
10-4
OK, message received
10-26 Disregard last information
10-5
Relay message
10-27 I am moving to channel
10-6
Busy, stand by
10-28 Identify your station
10-7
Out of service
10-32 I will give you a radio check
10-8
In service
10-33 Emergency traffic
10-9
Repeat message
10-36 Correct time is____
10-10 Transmission completed,
standing by
10-37 Wrecker needed at____
10-11 Talking too rapidly
10-38 Ambulance needed at____
10-12 Visitors present
10-41 Please turn to channel____
10-13 Advise Weather/Road
conditions
10-42 Traffic accident at____
10-17 Urgent business
10-43 Traffic tie-up at____
10-18 Anything for us?
10-50 Break channel
10-19 Nothing for you. Return to base 10-62 Unable to copy; use telephone
10-20 My location is____
10-20 My location is____
10-70 Fire at____
10-21 Call by telephone
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