Using Common 10-Codes - Radio Shack TRC-442 Owner's Manual

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USING COMMON 10-CODES

Citizen's band operators have largely adopted the 10-codes for standard questions
and answers. These codes permit faster communication and better intelligibility in
noisy areas. This table lists codes adopted by the Associated Public-Safety Commu-
nications Officers (APCO).
Code Meaning
10-1 Your signal is bad.
10-2 Your signal is good.
10-3 Stop transmitting.
Message received and under-
10-4
stood.
10-5 Relay information to _____.
10-6 I am busy or are you busy?
10-7 Out of service.
10-8 In service.
10-9 Repeat last message.
10-10 Negative (No).
10-11 _____ in service.
10-12 Stand by.
Report road/weather condi-
10-13
tions.
10-14 Information.
10-15 Message delivered.
10-16 Reply to message.
Note: Although this table lists the 10-codes' meanings in the form of a statement, they
can also be phrased as questions (10-6: Are you busy?, 10-20: What is your loca-
tion?).
Code Meaning
10-17 En route.
10-18 Urgent.
10-19 Contact _____.
10-20 What is your location?
10-21 Call _____ by telephone.
10-22 Cancel last message.
10-23 Arrived at the scene.
10-24 Assignment complete.
10-25 Meet _____.
Estimated time of arrival is
10-26
_____.
10-30 Use caution.
10-31 Pick up.
Emergency traffic. Clear the
10-33
channel.
10-34 What time is it?
10-41 Switch to Channel _.
10-62 Cannot understand.
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