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17
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 Communications Of-
ficers (APCO).
Code Meaning
10-1 Your si
g
nal is bad.
10-2 Your si
g
nal is
g
ood.
10-3 Stop transmittin
g
.
10-4
Messa
g
e received and under-
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 messa
g
e.
10-10 Ne
g
ative (NO).
10-11 _____ in service.
10-12 Stand by.
10-13
Report road/weather condi-
tions.
10-14 Information.
10-15 Messa
g
e delivered.
10-16 Reply to messa
g
e.
Code Meaning
10-17 En route.
10-18 Ur
g
ent.
10-19 Contact _____.
10-20 What is your location?
10-21 Call _____ by telephone.
10-22 Cancel last messa
g
e.
10-23 Arrived at the scene.
10-24 Assi
g
nment complete.
10-25 Meet _____.
10-26
Estimated time of arrival is
_____.
10-30 Use caution.
10-31 Pick up.
10-33
Emer
g
ency traffic. Clear the
channel.
10-34 What time is it?
10-41 Switch to Channel –.
10-62 Cannot understand.
21-1573.fm Page 17 Thursday, August 5, 1999 9:22 AM