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Thread: a few links to info on ground-planes that home-brewers may find interesting ....

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    a few links to info on ground-planes that home-brewers may find interesting ....

    http://www.comportco.com/~w5alt/antennas/notes/ant-notes.php?pg=20
    http://www.comportco.com/~w5alt/antennas/notes/ant-notes.php?pg=21
    http://www.comportco.com/~w5alt/antennas/notes/ant-notes.php?pg=22

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    /4 wave ground-planes are very sensitive to their ground plane and need full 1/4 wavelength for best performance . and the angle of those elements effect the tuning of the antenna .
    a 1/2 wave ground plane can be used without any ground elements , examples of this are the antron 99 and the ringo . IMO , i'd still use 1/4 wave ground elements ..... unless there just wasn't room for them .
    5/8 wave ground-planes can be used without ground elements too , but typically perform better with them .

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    CreekRock_3C3 (02-18-2016), Moonchild 747 (05-06-2013)

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    Great read!
    de 747 and I'm clear...

    "He who controls the electromagnetic spectrum controls the world..."

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    Awesome information MONSTER. I appreciate you putting that together. I'm currently using an antron-99 without and ground elements, but this has made me reconsider that. Much appreciated.
    73's from 3Charlie3 and I'll be readin the mail.......

    Local's know me as Creek Rock, you can call me either....

    Cobra 29 WX NW ST
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    soon: (SMPS based 90amp Regulated Home Brew)

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    If you get dx conditions on ol' KY be sure to holler!!! 3Charlie3
    wavin 5

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    You mean you don't have a proper ground system setup or you aren't using the ground plane radial kit with your A99? If so, add a good 1:1 isolating balun at the feedpoint to kill any CMC issues at the feedpoint and make sure you have a proper ground system. Look up how they ground commercial towers for cell sites and such and you'll get the idea of a proper grounding system then. As for adding the GPK kit, it helps with CMC issues, and may make your receive a bit quieter. Other than that, with a good 1:1 isolating balun or even a wound coax choke will help with CMC issues. Having a proper ground system is a must IMO though.

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    BOOTY MONSTER (02-19-2016)

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    Name:  BELOWANTENNA.jpg
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    you can make a GP for less than 10 bucks to see it it will benefit you buy or build something more durable/prettier . get two 10 ft pieces of schedule 40 3/4 or 1 inch pvc pipe (i prefer 1 inch) and the correct size 4 way and some glue . cut the two 10 ft pieces down to 5 ft . glue them to the 4 way so you have a X shape . use 16 gauge or larger wire (solid or stranded) and cut four 9 ft 3 inch pieces . drill holes at the ends of the X to attach the wires to and attach the other ends to the bolts that mount your antenna to it's mast . tape/secure the cross section of the X to the mast so it doesn't flop around freely . the photo above is where i used that on my first home made groundplane (1/4 wave) . i used the exact same GP when i built my first .64 gp .

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