CB 10 Codes

The Complete List of CB 10 codes

  • 10-1 Receiving Poorly
  • 10-2 Receiving Well
  • 10-3 Stop Transmitting
  • 10-4 Ok, Message Received
  • 10-5 Relay Message
  • 10-6 Busy, Stand By
  • 10-7 Out of Service, Leaving Air
  • 10-8 In Service, subject to call
  • 10-9 Repeat Message
  • 10-10 Transmission Completed, Standing By
  • 10-11 Talking too Rapidly
  • 10-12 Visitors Present
  • 10-13 Advise weather/road conditions
  • 10-16 Make Pickup at…
  • 10-17 Urgent Business
  • 10-18 Anything for us?
  • 10-19 Nothing for you, return to base
  • 10-20 My Location is ……… or What’s your Location?
  • 10-21 Call by Telephone
  • 10-22 Report in Person to _____
  • 10-23 Stand by
  • 10-24 Completed last assignment
  • 10-25 Can you Contact ______
  • 10-26 Disregard Last Information/Cancel Last Message/Ignore
  • 10-27 I am moving to Channel ___
  • 10-28 Identify your station
  • 10-29 Time is up for contact
  • 10-30 Does not conform to FCC Rules
  • 10-32 I will give you a radio check
  • 10-33 Emergency Traffic at this station
  • 10-34 Trouble at this station, help needed
  • 10-35 Confidential Information
  • 10-36 Correct Time is _____
  • 10-38 Ambulance needed at _____
  • 10-39 Your message delivered
  • 10-41 Please tune to channel ___
  • 10-42 Traffic Accident at _____
  • 10-43 Traffic tie-up at _____
  • 10-44 I have a message for you (or ____)
  • 10-45 All units within range please report
  • 10-50 Break Channel
  • 10-62 Unable to copy, use phone
  • 10-62sl unable to copy on AM, use Sideband Lower (not an official code)
  • 10-62su unable to copy on AM, use Sideband Upper (not an official code)
  • 10-65 Awaiting your next message/assignment
  • 10-67 All units comply
  • 10-70 Fire at _____
  • 10-73 Speed Trap at _____
  • 10-75 You are causing interference
  • 10-77 Negative Contact
  • 10-84 My telephone number is ____
  • 10-85 My address is _____
  • 10-91 Talk closer to the Mike
  • 10-92 Your transmitter is out of adjustment
  • 10-93 Check my frequency on this channel
  • 10-94 Please give me a long count
  • 10-95 Transmit dead carrier for 5 sec.
  • 10-99 Mission completed, all units secure
  • 10-100 Need to go to Bathroom
  • 10-200 Police needed at _____

Frequency Table

This table is the frequency chart for the legal Citizens Band Radio Service. There are 40 channels, designated 1 through 40. The service is AM but also allows for SSB operation on radios that are capable. CB, as it is called, is a two-way voice communication service for use in your personal and business activities. Expect a communication range of one to five miles. License documents are neither needed or issued. CB Rule 3 provides your authority to operate a CB unit in places where the FCC regulates radio communications, as long as you use only an unmodified FCC certificated CB unit (CB Rule 9). An FCC certificated unit has an identifying label placed on it by the manufacturer. Per the FCC, there is no age or citizenship requirement. You may operate your CB unit within the territorial limits of the fifty United States, the District of Columbia, and the Caribbean and Pacific Insular areas (“U.S.”). You may also operate your CB on or over any other area of the world, except within the territorial limits of areas where radio-communications are regulated by another agency of the U.S. or within the territorial limits of any foreign government. You may also be permitted to use your CB unit in Canada subject to the rules of Industry Canada; other countries may also allow CB frequency use but it is your responsibility to verify that prior to use.

There are no height restrictions for antennas mounted on vehicles or for hand-held units (CB Rule 8). For structures, the highest point of your antenna must not be more than 20 feet above the highest point of the building or tree on which it is mounted, or 60 feet above the ground. There are lower height limits if your antenna structure is located within two miles of an airport. You may use any of the 40 CB channels on a “take-turns” basis. These channels must be shared by all CB users. There are no channels authorized in the CB Radio Service above 27.405 MHz or below 26.965 MHz. No CB channel is assigned to any specific individual or organization (CB Rule 7). Be cooperative. Keep your communications short. Never talk with another station for more than 5 minutes continuously. Then wait at least one minute before starting another communication (CB Rule 16). Use Channel 9 only for emergency communications or for traveler assistance. For complete information, see the Commission’s Rules for the Citizens Band (CB) Radio Service, 47 C.F.R. 95.401-95.428. You may also find interest in the Family Radio Service (FRS) Frequency Table, . Besides this CB service, the others in the same category (but not the same general purpose, are MURS, Multi-Use Radio Service, the Low Power Radio Service (LPRS) at 216-217 MHz, the Medical Implant Communications Service (MICS), the Family Radio Service (FRS) at 460 MHz, and the Wireless Medical Telemetry Service (WMTS).

As of January 4, 2011, the regulations concerning CB radio operation in the US remain in place as they have been since August 3, 2004.

History of the CB Radio

Alfred J. Gross 1918-2000

In 1945 Al Gross powered up the first CB radio, it operated on 27 megahertz and 12 channels. During this time UHF technologies had not advanced enough to be able to sell to the general public at a reasonable rate, they were just too expensive for the average Joe on the street. They were however available to industry drivers such as ambulance, police and the local fire departments. By 1960 the price had reached a comfortable level that they became more popular with small businesses and blue collar workers who began to use the radio as a tool of communication out in the field where a telephone was not handy. In the early seventies the CB moved into the private sector.

By 1973 the United States was in the midst of an oil crisis. As the direct result of the fuel shortage the government reduced the maximum highway speed limit from, what I remember, 75 mph to a mere 55 mph. This was a means to save on fuel consumption, you may not know this but it was proven that at reduced speeds a vehicle consumed less fuel. But who wanted that? Not our friends the over the road truck driver. It took him more time to get his load to the drop site which meant fewer jobs and less pay.

The local and state police knew this. In fact they took advantage of it. Using the change in speed limit to set up “speed traps” to catch the drivers breaking that newly enacted law every stop increased the municipal bank accounts.

That’s where the CB becomes the truck driver’s best friend. With the CB a driver to communicate with other drivers ahead or behind him and give a “shout out” providing information of what lays ahead on the road.

Truckers devised their own language to communicate information. As an example if there was a speed trap on the road a driver might announce there is a “Smokey Bear” at mile marker 42 on highway 90. Or you might hear there is an alligator in the road. Don’t be shocked, seems these alligators appear almost everywhere across this country. An alligator is a strip of rubber from a trucks tire tread. They are fairly harmless unless you run over one at an excessive speed.

OK so now we know it started as a tool of communication where there was no other source of communication available. It then became a truck driver’s best friend during the 70’s oil crisis. It was only natural that it should migrate to the general public.

Here the home user would set up a base station, a permanent radio set up, an reach out to others, either mobile or at home. And of course there are still those who keep a mobile unit in their car for long trips.

What’s next for the low tech CB Radio? Think Zombie Apocalypse.

What is a CB Radio?

If you were to pull over a car full of 20 somethings they might be able to answer this question. Of course it would be a very vague answer. They might say something like don’t truck drivers use them to talk on, or maybe they would make a quick reference to the movie Smokey and the Bandit. If they did have a more accurate idea it would be because someone in their life was like us, a user of the technology we call citizens band radio.

You and I know they are much  more than  that. And in the event one of those twenty somethings should happen across this posting we should make an effort to explain to them just what we are talking about. So let us answer the question: What is a CB Radio?

A CB Radio is a short range radio used for communication much like your landline telephone or cell phone. One of the big advantages to the CB is you can have a conversation with multiple people at the same time and they can be complete strangers. That’s right, unknown friends whose common interests include owning and operating a CB Radio. These new friends can be down the street or, with the right equipment and conditions, across the country or even around the world.

A CB Radio, whether a base unit (permanent set up at home) or a mobile unit (mounted in your vehicle) operates on 40 shared channels keeping in mind that only one radio can transmit at a time. The communication uses radio waves within a specific band of RF (radio frequencies). Just like your cell phone, home or car stereo system, and even your television CB Radios create an electronic sound wave within a RF band that float through the atmosphere. Different transmissions use a specific range of RF to keep the transmissions from scrambling and causing interference with each other. You wouldn’t want your favorite television show to be interrupted by your neighbor’s jazz FM radio broadcast would you?

And just who determines who is allowed to use which RF? Why the FCC (Federal Communications Commission) of course.

We’ll go more into the FCC in a different posting.

So did we answer the question? What is a CB Radio? Simply put, it is a transmitting and receiving radio used for communication between two or more operators.