Does CB coax length matter?

What is the best length of coax for CB radio?

We recommend 18 feet of coax even if you don’t need that much. If you use a length that is shorter or longer, you might risk having trouble achieving good SWR readings. Properly store any excess coax in a figure 8, about one foot in length, and bound in the middle- it should look like a long, skinny 8.

Does length of coax affect signal?

Does Length of Coaxial Cable Affect Signal Loss? Yes, the greater the length of coax cable you use, the more signal loss you will experience.

Does coax length affect SWR?

Changing the length of coaxial cable does not change the characteristics of your antenna. Don’t get overly obsessed with SWR if your antenna is fairly well matched.

What length should a CB antenna be?


What is a coil and why is it needed? The optimal antenna length for CB frequencies is 102” as this represents one-quarter of a wavelength. Unfortunately, mounting a 102” (8.5-foot) antenna to a vehicle is often not a viable option!

How do I know if my CB antenna is too long?

There are two basic points to understand before adjusting the length of your antenna:

  1. If the SWR on channel 40 is higher than that on channel 1, your antenna is too long.
  2. If the SWR on channel 1 is higher than that on channel 40, your antenna is too short.

Is it better to have a shorter coaxial cable?

A shorter cable will have less loss than a longer cable and a thicker cable will have less loss than a thinner cable.

Does coax length affect impedance?

The characteristic impedance of coaxial cable or any type of transmission line is constant, regardless of its length.

Do coax splitters reduce signal?

A splitter weakens the signal level, which can cause intermittent loss of service or, in rare cases, service failure. We recommend connecting your modem or Spectrum receiver directly to a wall outlet rather than using a splitter.

Does long coax cable reduce speed?

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How long is CB coax?

RG58 CB Coax – 25′, 50′, 75′, 100′

This RG-58 coaxial is 90% shielded against signal loss and interference, and has dual molded PL-259 ends. Available in 25′, 50′, 75′ and 100′ lengths.

How far should coax be from power?

Electrical lines can cause nasty interference in coaxial cable. So keep coax cables as least 6 in. away from electrical cable, even if the cables are separated by wood or other building materials.

Does long coax cable reduce speed?

So, the long answer made short is that no, coaxial cable does not slow down your Internet. It can be leveraged to vastly improve your Internet. You can enhance your Wi-Fi connection in every corner of your home with HT-EM4 MoCA adapters.