Radio Shack TRC-442 owner manual Using Common 10-CODES, Code Meaning

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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.
10-4	Message 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 message.
10-10	Negative (No).
10-11	_____ in service.
10-12	Stand by.
10-13	Report road/weather condi-
	tions.
10-14	Information.
10-15	Message delivered.
10-16	Reply to message.

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 _____.
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?
10-41	Switch to Channel _.
10-62	Cannot understand.

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?).

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