If you’ve ever experimented with your own amateur radio system (ham radio), you might have found yourself asking this question.
After all, CB radios and ham radios do have a lot in common. They’re both primarily designed for communication rather than entertainment.
This sets CB and ham radios apart from the standard AM, FM, and DAB radios you might have installed in your car or home. Both tools also operate on high-frequency wavelengths.
On the surface, the technology involved in using CB and ham radios suggests that ham radio operators should be able to speak to CB users and vice-versa.
However, connecting CB and ham radios isn’t as simple as it seems.
Here’s everything you need to know about communicating with CB radios via a ham handheld device.
What Are CB Radios and Ham Radios?
To understand the ham radio to CB connection, we first need to define both types of radio systems.
CB radios, or citizens band radios, are short-range communication systems generally used in the commercial or professional world.
They’re the tools truckers and other professionals use to communicate when standard smartphones and phone lines aren’t reliable.
CB radios can transmit and receive signals from the citizen band, a specific high-frequency range dedicated to CB users.
The citizen’s band was first formed in the US in 1945 as a tool for communications.
At first, it was available on the ultra-high frequency band. However, devices accessing this frequency range weren’t accessible to everyone.
Another band, the Class D service, was introduced to create the CB radio experience most of us are familiar with today.
Ham radio, otherwise known as amateur radio, is another radio solution used for communication.
Amateur radio enthusiasts use the transmission options available with ham radio to connect with other community members.
However, it’s worth noting that users in the United States must apply for a license.
Are Ham Radios the Same as CB Radios?
While ham and CB radios might seem similar on the surface, there are some significant differences between them, which impact the ability to connect the two devices.
One of the biggest differences is the frequencies these devices use.
Ham radios transmit and receive data on amateur radio bands, often within the UHF and VHF ranges.
CB radios, alternatively, are restricted to a specific band (11m) in the HF range. They can only use specific frequencies between 26.9650 and 27.4050 MHz.
Going outside these frequencies on a CB radio means you could break the law.
CB radios are also far more restricted in terms of power than ham radios.
The FCC limited the maximum power output of any CB radio to 4 watts transmitting via AM mode and 12 watts PEP when transmitting using SSB modes.
Alternatively, a ham radio can reach 1500 watts in transmission power. This restriction to power on CB radios limits the coverage of most CB radios, which can’t communicate nearly as far as a ham radio can.
The Restrictions on CB Radios
Perhaps the most significant difference between ham and CB radios is the restrictions on how users can access the devices.
CB radios are unlicensed, so you don’t have to apply for anything to use one of these devices.
Anyone can use a citizens band radio and CB antenna. However, there are restrictions to the power levels and frequencies you can access with a CB device.
Failure to comply with all the rules and regulations surrounding using CB radios could mean facing a massive fine or even legal repercussions.
Can a Handheld Ham Radio Talk to CB Radios?
So, is it possible to make a ham to CB radio connection?
The short answer is yes; from a technological perspective, talking to a CB radio with a ham device is possible.
The long answer is that while it’s technically possible to do this, it’s not legal.
CB radios operate in the HF range using the 11m band, and ham radios can communicate with this frequency range.
However, transmitting and receiving information to a CB radio from a ham device will violate several legal restrictions.
Licensed ham users are not permitted to speak to “unlicensed stations.” Attempting to communicate with a CB radio using a ham device could land you in jail or with a hefty fine.
It’s also worth noting that, technically, connecting a ham Radio to CB channels isn’t as simple as it seems.
You’d probably need to modify or build a store-bought ham device to access the CB radio frequency.
The Ham Radio to CB Radio Connection Rule Exception
However, an exception to the rule prevents ham operators from communicating with CB radios.
The FCC states that off-collar communications are permitted during times of emergency.
This means when the safety of your life or property is threatened, you may be able to use a ham radio to communicate with the citizen’s band if no other forms of communication are available.
It’s also possible to communicate with CB radios via ham when another station is distressed or when standard communication systems are inaccessible.
Still, you will be asked to defend your actions and explain why you chose to break the FCC rules if you decide to reach out to a CB radio using a ham handheld.
Can You Use a CB Antenna for a Ham Radio?
If you’re wondering whether handheld ham radios and CB radios can communicate, you might also be wondering whether you can use CB radio technology with an amateur radio device.
If you’re using your amateur radio and need help boosting your signal, you can repurpose and use a CB antenna on your ham device.
CB radios can potentially support ham radio communications. That’s because CB radio operates in the 11m band.
This band is very close to the 10m and 12m bands used by ham radio operators.
However, you may need to adjust the length of your CB radio antenna, and most experts will recommend using additional technology to support the connection.
For instance, you might need an SWR meter and antenna tuner to help reduce impedance mismatching, enhance your communications, and protect your transceiver.
It’s also worth noting that many people in the ham radio community don’t use the 10m and 12m bands.
Many communications occur in the 2m and 70cm bands, which aren’t as easily accessible with CB antennae.
Ham and CB Radio FAQs
Do You Need a License for CB Radio?
No, CB radio is unlicensed and available for anyone to use. However, you must follow the rules and regulations set by the FCC.
This means ensuring you don’t go above the CB radio power limitations or use your CB radio to communicate with any licensed radio systems.
Are CB Radios Better Than Ham Radios?
It all depends on your specific needs. CB radios give you direct access to a particular frequency band for communications. They’re specially designed for communication in the professional world when phone systems aren’t reliable.
Ham radios help amateur radio operators communicate and broadcast on a much grander scale.
Can You Accidentally Transmit on CB Radio?
Typically, most ham radio systems aren’t designed to transmit on CB radio frequencies. You’d usually have to modify your ham radio to make this possible.
However, it’s essential to know which frequencies you use to keep yourself out of trouble.