13
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 ar-
eas. This table lists codes adopted
by the Associated Public Safety
Communications Officers (APCO).
Code
Meaning
10-1
Cannot understand your
message.
10-2
Your signal is good.
10-3
Stop transmitting.
10-4
Message received and
understood.
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.
10-13
Report ____________
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?
10-21
Call ____________ by
telephone.
10-22
Cancel last message.
10-23
Arrived at the scene.
10-24
Assignment complete.
10-25
Meet ____________.
10-26
Estimated time of arrival
is ____________.
10-30
Use caution.
10-31
Pick up.
10-33
Emergency traffic. Clear
the channel.
10-34
What time is it?
Code
Meaning
21-1579.fm Page 13 Thursday, August 5, 1999 9:34 AM
