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SWR Meter Coax Connections

Posted by Pat Haggerty updated

A common mistake when tuning a CB antenna is mixing up the two coax connections at the back on the SWR meter. If you don't make the correct connections, your SWR meter won't give you accurate readings and will likely show high SWR readings whatever you do!

All SWR meters should indicate which terminal should be connected to the antenna, and which should be connected to the radio. The labels are sometimes listed on the back of the meter, but are often printed on the front and can be easy to miss. The front label refers to the terminal directly behind it on the meter, as is visible in Image 1 and Image 2.

Image 1 - Terminal Labels

Image 2 - Back of the SWR Meter

Be sure to take notice of the labels on the SWR meter and you'll save yourself a lot of frustration!


Pat Haggerty

About the Author

As the owner and operator of Right Channel Radios, Pat Haggerty has been helping customers find the best radio solutions since 2008. He is highly knowledgeable in all mobile radio options and setups, including CB radios, GMRS radios, and HAM radios. His wide library of how-to and help articles is frequently referred to as one of the best resources for CB radio installations and technical support online. When he's not assisting radio enthusiasts online or on the phone, you can find Pat enjoying all that Montana's trails have to offer on his skis, mountain bike or Land Cruiser.