CB Coax Antenna Cable Length?

Discussion in 'Electronic Toys' started by spressomon, Sep 20, 2006.

  1. spressomon

    spressomon glutton

    Messages:
    11,073
    Location:
    Central Coast
    I am running the coax from the CB/2M location to the antenna location. The guy that sold me the coax lead said not to shorten it...and that it wouldn't hurt to coil the excess length. #1) Can I shorten the coax antenna lead by say 5' for a total length of about 7'-8' without significant performance loss? #2) From what I have read leaving the excess (assuming I should not shorten the coax lead) coiled up is not a good idea: So what do you do with the excess length?

    Thanks
    Dan
  2. Mark W

    Mark W

    Messages:
    6,166
    Location:
    The Greatland
    Fairly loose oval "bunching" is fine and does not produce the problems that coiling it does.


    Mark...
  3. brew8

    brew8 SILVER Star

    Messages:
    1,725
    Some suppiers think the cable should be cut to a wavelength of the frequency. Unless it's prescribed by the antenna supplier then it dosen't matter, the cable impedence is 50 ohms if it's short or long it's the impedence of the antenna that is important. most of the time the longer cable is used to keep SWR lower because of the poor placement of the antenna or a poor antenna. At 5 watts especially with an AM radio a shorter cable with a well placed high quality antenna will put more RF energy into the air where it belongs. Cheers, Larry
  4. spressomon

    spressomon glutton

    Messages:
    11,073
    Location:
    Central Coast

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