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Thread: Build IBCrazy's 10dbic CP Double Quad antenna

  1. #81
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    Alex..

    What SMA plug goes with the RG62A/U cable?

  2. #82
    Engineer for Jesus Christ IBCrazy's Avatar
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    ??? There is no connector on the RG62 cable. Only on the feedline.

    -Alex
    If it is broken, fix it. if it isn't broken, I'll soon fix that.

    videoaerialsystems.com - Performance video piloting

  3. #83
    Altitude Junkie GregSilver's Avatar
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    wait... is the goof proof patch CP or LP ?

    I would feel like a moron to have engraved all that LHCP crap on it, if it wasnt CP.

  4. #84
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    Quote Originally Posted by IBCrazy View Post
    ??? There is no connector on the RG62 cable. Only on the feedline.

    -Alex
    Alex..

    Unless I'm missing something it looks as though in the video you are using RG62 cable for the feedline.. Correct??

  5. #85
    Engineer for Jesus Christ IBCrazy's Avatar
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    I am using RG58/u for the input feedline and RG62 as the phase shifting transformer.

    -Alex
    If it is broken, fix it. if it isn't broken, I'll soon fix that.

    videoaerialsystems.com - Performance video piloting

  6. #86
    Engineer for Jesus Christ IBCrazy's Avatar
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    The GP patch is LHCP. It was designed in 1953 by K5OE as a dish feed antenna.

    -Alex
    If it is broken, fix it. if it isn't broken, I'll soon fix that.

    videoaerialsystems.com - Performance video piloting

  7. #87
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    Quote Originally Posted by IBCrazy View Post
    I am using RG58/u for the input feedline and RG62 as the phase shifting transformer.

    -Alex
    OK. Thanks Alex..

    In post #3 The feedline isn't specified.. Just the RG62 cable for the phase shifting transformer is listed.. I was making an assumption that the feedline was RG62.. (Just goes to show what I know)
    Last edited by Mykro; 10th November 2011 at 12:40 PM.

  8. #88
    Altitude Junkie GregSilver's Avatar
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    So i can use my DirecTV dish that the leasing office told me to take down with my patch?! lol

  9. #89
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    Quote Originally Posted by Mykro View Post
    OK. Thanks Alex..

    In post #3 The feedline isn't specified.. Just the RG62 cable for the phase shifting transformer is listed.. I was making an assumption that the feedline was RG62.. (Just goes to show what I know)

    Alex.. I do have a length of
    LMR-195 coax with an SMA plug.. Can I use this as my feedline??

  10. #90
    Hi Alex
    I really admire your work. You have given so much to the FPV world, and I like your honesty in your beliefs, wish I also share. I have just started out with RC, and have build myself a quad and are making plans for a hexacopter build for the summer. I have bought myself a full FPV setup, but is not at all satisfied with my range. I am using omnidirectional antenna on my quad, and have a hobbyking`s patch-antenna and a omnidirectional on the ground. I have watched most of your tutorials, and have decided to make 2 helical, one with 5 turns and one with 12 turns, but then I suddenly saw this tutorial, and was wondering if I should build this one instead. Maybe I will build all three of them. But I have a few question, maybe some of you can fill me up. Is it possible to use the RG58 50ohms cables? If not, where can I get the RG62 cables? And I am using a 2.4ghz FPV setup, and was wondering how thick wire should I use? Thanks for all answers.
    Inge

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