How to Peak and Tune a CB Radio? Beginners Guide

How To Peak And Tune A Cb Radio

A CB radio is basically a radio system that enables you to communicate with other CB radio holders by transmitting signals via the Amplitude Modulation (AM) mechanism. You can use a CB radio for short distances and establish bi-directional radio communications. In that case, you may use a 4-watt transmitter, which usually can cover up to 3 to 20 miles.

Now, it is of the utmost importance that you peak and tunes your CB radio properly. Otherwise, you won’t be able to use it to serve your purpose. Keep reading to learn more about this.

Step 1: Get the Basic Supplies

The first thing to do is to buy what you will need to set up.

  1. The Radio: These are usually available for measures of 4 watts or less. You can get an SSB CB radio with an attached microphone for your benefit.
  2. The Antenna: This is the most important instrument. You can buy the fiberglass CB antenna since it’s tunable. And you can adjust the length while tuning.
  3. An SWR Meter: It is used to measure the radio’s output. This instrument is also necessary for tuning your antenna. Look for the ones with an adjustable squelch range. It can be used to cancel noise.
  4. Coaxial Cables: The CB coax cables connect the instruments to one another. One is used to connect the antenna with the radio and the other to connect with the SWR meter.
  5. Batteries: You can buy these in bulk once you know which battery your radio needs.

Step 2: Set up Your SWR Meter

With the help of the manual, connect the SWR meter to your antenna with coaxial cables. Adjust the squelch for noise cancellation. When adjusted properly, everything will just be better heard.

Whenever the SWR meter gives you a reading, you’ll want it to be as low as possible to avoid any damage to the radio.


Step 3: Set up the Antenna

Fix the antenna to your car on the highest point possible in order to receive the maximum range. Then connect the antenna with the radio with a coaxial cable. Adjust the antenna as per your needs to tune the CB radio. This is required to optimize the signal that the antenna receives.

Check the SWR reading in between adjustments to make sure it is below 2.0. Then compare the readings of channels 1 and 40.

If channel 1’s reading is higher than channel 40’s reading, then your antenna needs to be lengthened. Make sure the reading on channel 1 and 40 are more or less equal, and the reading below 2.0.

Step 4: Peak the Radio

This is the most difficult step and always recommended that it be done by a specialist unless you have enough experience. Peaking may not be necessary if the radio is of a newer version. However, It is a must for the older models.


When you do this, the radio can receive signals with maximum efficiency. It is highly recommended that you take it to a store for peaking, in order to save a lot of trouble and effort.

Step 5: Test the Radio

You are now ready to test your radio with other CB radios. You and your friend with whom you are testing should be on the same channel. Tune in to different ranges and channels to get a general idea about your transmissions.

Step 6: Know Your Codes

Learn the necessary codes that are required to communicate with someone on the radio on an official basis. You can get the best use of your radio out of this. Have a general idea about the channels.

The official channel for emergencies, declared by the FCC, is channel 9. You can tune in to this channel when you face an emergency. There are many others, and you can find them out by experimenting with your radio.


During the tuning and peaking process, you should refer to the manual for more straight-forward assistance. Since various models are available on the market, every model is quite different than the others.

But hopefully, this article has helped you to get some direction in this area. Best of luck, and get one of the best CB radios out there!

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