CB Antenna Length – How does an antenna size affect my CB radio? | Offroaders.com
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CB Antenna Length – How does an antenna size affect my CB radio?

CB Antenna Length
How does an antenna size affect my CB radio?  

If the SWR on channel 40 is greater than that on channel 1, your antenna is considered to be “LONG” and reduction of physical height and/or conductor length will correct this situation.