21-1599.fm Page 12 Thursday, August 5, 1999 10:59 AM

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 the codes adopted by the Associated Public Safety Com- munications 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.

 

 

12

Code

Meaning

 

 

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 tele-

 

phone.

 

 

10-22

Cancel last message.

 

 

10-23

Arrived at the scene.

 

 

10-24

Assignment complete.

 

 

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?

 

 

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Radio Shack 21-1599 owner manual Using Common 10-Codes, Code Meaning