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My first attempt to build a 5/8 wave homemade

Discussion in 'Home Brew' started by HomerBB, Mar 17, 2009.

  1. RickC.

    RickC. Hopeless antenna junkie

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    As far as the match goes, yeah, I don't think you'll improve on that!

    I built one a while back with a loop about 2 feet in diameter- which worked fine but couldn't take any abuse.

    Looks like you've got a handle on it, congrats!


    Rick


     

  2. HomerBB

    HomerBB Sr. Member

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    I have a coil at the base of the vertical which, apparently, reduced the need for a larger ring. As for abuse, II'll see when we get some high winds.
     
  3. HomerBB

    HomerBB Sr. Member

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    Now I see what the high winds do to this thing.:p Ironically, the swr after it fell was

    ch 1 1.1
    ch 19 1.2
    ch 40 1.4

    I could still hear and transmit effectively. The design is good, but the materials are weak. I'll get some good stuff to build it and put it together for the long haul.

    [​IMG]
     
  4. RickC.

    RickC. Hopeless antenna junkie

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    Ouch!

    Hey well, you know what you have to do to tune it now! Must have been the weekend for antennas to go awry...
     
  5. HomerBB

    HomerBB Sr. Member

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    Whole lotta wind. Thought it was gonna be ok... :thumbdown:
     
  6. HomerBB

    HomerBB Sr. Member

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    Well, now I must say that this has turned into something of a mini-disaster. Putting the A99 back in place is disappointing. The old long-time, A99 just doesn't hold a candle to the homemade is some respects. Can't hear as far, reduced signal and audio on receive, and what a room full of white noise and static by comparison to the broken down 5/8.
    Without a doubt, something must be done.

    :angry:
     
  7. Moleculo

    Moleculo Administrator
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    I know it's disappointing that it broke down, but look at this way: You got a chance to test out the difference between the A99 and a 5/8 wave. You also learned something about the structural integrity that's necessary for a big aluminum antenna. When you build it back up, show us some close up pics of what you decided on to make it strong enough for the next wind storm.
     
  8. HomerBB

    HomerBB Sr. Member

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    When I do, mind you, It will be out of materials that are laying around, or available at the nearby home depot or flea market. I'm no machinist, and wouldn't want to experiment in an area that excludes poor boys like me.

    No telling what I'll come up with or whether it will be any better...

    I'll do photos
     
  9. HomerBB

    HomerBB Sr. Member

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    5/6 Redo 01

    I have begun to rework my 5/8 homemade.

    Explanations later, but here are a few photos:

    5/8 Redo 01
     
    #24 HomerBB, Apr 16, 2009
    Last edited: Apr 17, 2009
  10. RickC.

    RickC. Hopeless antenna junkie

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    I look forward to seeing the pics Homer, but that link isn't working...
     
  11. HomerBB

    HomerBB Sr. Member

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    Deleted this irrelevant post.

    Homer
     
    #26 HomerBB, Apr 16, 2009
    Last edited: Apr 17, 2009
  12. mechanic

    mechanic Well-Known Member

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    Could you stuff the pipe with a long wooden dowel to prevent it from breaking? BTW I like the looks of your antenna! (y)

    Mechanic
     
  13. Moleculo

    Moleculo Administrator
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    Homer, you can always just attach the pictures directly to the thread here. Use the little paperclip on the "Go Advanced" reply button.
     
  14. HomerBB

    HomerBB Sr. Member

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    I did the wooden dowel, but it broke.
     
    #29 HomerBB, Apr 17, 2009
    Last edited: Apr 17, 2009
  15. HomerBB

    HomerBB Sr. Member

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    ok.


    These are updates from today

    I intend to paint it all gray to look better.

    The SWR are pretty good.

    Flat 1:0 at 27.195

    1:2 at 27.405
    1:2 at 26.965

    I am probably going to cover the exposed coils and the PVC holding the vertical element with fiberglass to protect it and reinforce it for additional strength.
     

    Attached Files:

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