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Must CB Antenna mount be grounded ?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Rellik01, Jun 3, 2011.

  1. Jun 3, 2011 at 10:09 AM
    #1
    Rellik01

    Rellik01 [OP] Well-Known Member

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    Craig
    Windermere, Florida
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    2012 TRD Sport 4x4 White
    Bull Guard powder coated white, chrome aftermarket tail lights,Led interior lights, Factory roof rack, Bug deflector, Factory tow package, Garmin GPS, Viper 5901 alarm with auto start, Weather tech window wind deflectors, , 3" Tube steps powder coated white, CB Radio, Radio Scanner.
    Plan on installing antenna mount to bed or bed rail must the mount be grounded?
    Thanks as always.
    Craig
     
  2. Jun 3, 2011 at 10:16 AM
    #2
    PreRunnerSeth

    PreRunnerSeth Well-Known Member

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    Yes, SWR will be through the roof and may damage your radio if you don't, not to mention you wont get out at all.
     
  3. Jun 3, 2011 at 10:41 AM
    #3
    JKD

    JKD Well-Known Member

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    An antenna that needs a ground plane is going to be a pretty poor performer on a composite bed. You need more than just a DC ground for good antenna performance -- it needs to be over a decent counterpoise, generally a (horizontal/perpendicular) body panel. That's why center roof mount is almost always ideal.
     
  4. Jun 4, 2011 at 12:31 AM
    #4
    Rellik01

    Rellik01 [OP] Well-Known Member

    Joined:
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    838
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    First Name:
    Craig
    Windermere, Florida
    Vehicle:
    2012 TRD Sport 4x4 White
    Bull Guard powder coated white, chrome aftermarket tail lights,Led interior lights, Factory roof rack, Bug deflector, Factory tow package, Garmin GPS, Viper 5901 alarm with auto start, Weather tech window wind deflectors, , 3" Tube steps powder coated white, CB Radio, Radio Scanner.
    If i understand correctly. I can mount in bed but I must wire the mount to ground. I also understabd that TX/RX will not be optimum. Does this kind of cover it?
    Thank
    Craig
     
  5. Jun 4, 2011 at 2:28 AM
    #5
    JKD

    JKD Well-Known Member

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    If you're going to do that, I'd run BRAID down to the frame. Not ideal, but provides a better RF ground than solid or stranded wire. I really don't know how effective the antenna will be, but that's better than nothing.

    I toyed with the idea of running braid under the bed in a grid pattern to provide an artificial counterpoise (to use a 5/8 wave VHF antenna back there) but decided it wasn't worth the trouble. I'll mount on a body seam up front, on the roof, or use a 1/2 wave.
     
  6. Jun 4, 2011 at 3:44 AM
    #6
    Rellik01

    Rellik01 [OP] Well-Known Member

    Joined:
    Apr 14, 2011
    Member:
    #54920
    Messages:
    838
    Gender:
    Male
    First Name:
    Craig
    Windermere, Florida
    Vehicle:
    2012 TRD Sport 4x4 White
    Bull Guard powder coated white, chrome aftermarket tail lights,Led interior lights, Factory roof rack, Bug deflector, Factory tow package, Garmin GPS, Viper 5901 alarm with auto start, Weather tech window wind deflectors, , 3" Tube steps powder coated white, CB Radio, Radio Scanner.
    Thanks for the quick reply !
    Craig
     
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