CB Radio Static Problems and How to Eliminate it

CB radio static problems are real pains. This white noise makes it difficult for users to communicate, making it even more necessary to get rid of it! Therefore, it’s critical to first find out the sources of the interference to resolve the issue. This article explains what CB static problems are and how you can eliminate them.

The static problems in CB can occur because of linked hardware, such as antenna and power supply. It can also result from signal overload because of interference from other wireless transmissions. In most cases, you can use your CB’s pre-installed noise filters or squelch/RF gain controls for a quick fix! These CB components automatically filter out the static and white noise to maximize your radio’s effectiveness.

Read on to learn where the interference may result from:

CB Radio Static Problems

CB Radio static problems are the interference that may arise from the hardware connected to your CB radio, such as the antenna, power supply, or mount. These create vibrations that create white noise in the speaker, making the communication unclear. As CB radios are highly sensitive, they’re susceptible to picking unwanted radiations, stray transmissions, and vibrations, leading to extra static and noise.

In order to eliminate the noise, you must first identify the source of the interference. Does it increase according to your location or is it constant? Does it increase when you turn on the car? Is it resulting from the A/C?


Static because of antenna is a common occurrence in CB devices. One way to check for this is to unplug the antenna from the device to see if you can still hear static from your device. If the interference persists, it’s more likely owing to external sources. But, if the noise subsides, you may need to investigate the antenna further. It may be because of the outlet, cables, or potential damage. In that case, you may need replacements. Alternately, try changing your antenna’s mounting location to see if that’s causing the interference.

Power supply

If the antenna is not causing the noise, you must look into the device’s power supply. Here’s how to check it:

  • Unplug the radio’s power supply and connect the unit directly into the battery.
  • If you notice that the vibration and static stops, then the power supply may be the cause.
  • Choose an interference filter to connect to your CB and battery to eliminate the static discharge.
  • Connect the radio to the power supply using a coaxial cable as you are integrating positive and negative wiring into a single cable instead of connecting two separate ones.

Nearby devices

If the static is resulting from neither the antenna nor the power supply, you need to check for external sources. Commonly, when the CB’s wiring is touching cables from another device, it causes disturbance. Reduce this interference by setting the cables from other contraptions.

Other sources

  • If your device is located closer to the A/C, you may notice noise interference. In that case, it’s best to move the unit.
  • Check for interference from lights, switches, and other equipment.
  • Your system may pick nearby radio signals causing unwanted white noise.
  • Check for any loose connections.

How to Remove Static from CB Radio

Here are a few simple ways you can eliminate the static problems in a CB radio.

Noise check

It’s a good idea to perform a noise test prior to mounting your CB radio, as it helps avoid interference problems. Place your unit where you wish to mount it to see if it produces any noise or static.


The squelch control on your CB filters out weak transmissions to minimize noise and only receives powerful signals.

  1. Tune in to your desired station and set the volume to the required level.
  2. Next, rotate the squelch knob until the static disappears.
  3. You can turn it back down to continue receiving some level of static, which is critical for proper transmissions.

RF gain

The RF gain works quite similar to the squelch as it helps reduce unwanted noise. But, the primary aim of this control is to boost the reception sensitivity on stations further away. Keep in mind; turning it all the way up could lead to static. It’s best to turn down the RF gain when you’re listening to nearby operators. Use the RF gain in combination with the squelch control for clearer transmissions.

CB radio static filter

Most modern CB radios boast noise-filtering circuits that automatically suppress static or filter out weaker signals to prevent interference. You can also find other manual controls, such as the Noise Blanker (NB) and Automatic Noise Limiter (ANL), which filter out interference on demand. The Cobra 29 LTD Professional is one such device that features both these noise filters.

Other options

  • Choose a stable position for your CB device and antenna system, where there is minimal noise and interference. If you can’t find a suitable ground for your radio, you can create an artificial plane that is free from vibrations or any external interference. 
  • Choose a ground that is free from any interference.
  • Protect your power supply by using lead with ring terminals and blade fuse.
  • If the static persists, despite following these steps, check with a technical expert.


Knowing how to get rid of static on CB radio is highly crucial, as you will want good reception and clearer transmissions at all times. The interference may arise from sources such as the antenna system, power supply, A/C, or nearby contraptions. Therefore, you must remember to keep all power leads running parallel to the antenna coax. You must keep all wires further away from the power cables. Check if the interference is arising from the antenna or the power supply by performing noise tests. Last, do not forget to opt for models that feature noise filters to counter static with absolute ease.