TRC-493 40-Channel CB Mobile Transceiver w/Digital Signal Processor
(210-1598)                 10-Codes                   Faxback Doc. # 45064

Using Common 10-Codes

Citizen's band operators and CB radio users 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 Communica-
tions 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 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 road/weather conditions.

10-14 ........................................................ Information

10-15 ................................................. Message delivered.

10-16 ................................................. Replay 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?

10-41 .............................................. Switch to Channel xx.

10-62 ................................................. Cannot understand.


(br/EB 11/3/97)