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Thread: Materials in hand. Now...

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  1. #1
    Join Date
    Mar 2011
    Location
    Mobile, AL USA
    Posts
    11

    Default Materials in hand. Now...

    What to build?

    I have plenty of raw materials at hand. Even have everything required to build an "Arrow-style" duplexer. Now I have to decide what antenna to build for the sats. An Arrow-copy? An IOio? Or... something else?

    Thoughts? Opinions on those antennas mentioned? Something completely different?

    Come on! Help me make up my mind!

    KK4AXX
    Mobile, AL
    Grid Square: EM50vo
    Icom 751; 40M Loop Skywire & 17M Vertical
    • George U. Potter Lodge, #912, F. & A. M. of Alabama, Historian
    • Valley of Mobile, Orient of Alabama, A. A. Scottish Rite, S.J.
    • Dave Langham Chapter, #536, Order of the Eastern Star, Sentinel
    • Order of DeMolay, Mobile Chapter, Chapter Dad


  2. #2
    Join Date
    Oct 2004
    Location
    Texas Forest
    Posts
    593

    Default

    I've built several styles over the past year.

    Do you intend to use this from a car?

    From the field?

    At home with a TV rotor?

    I can make you a recommendation based on those answers. I would not waste my time with a tape measure beam.

    The smaller 3 element designs such as iOiO, CJU, and K5OE Handitenna are all adequate for reception of any of the current mode J birds' down links.

    73
    Clayton
    W5PFG
    (a fraternal brother of yours)

  3. #3
    Join Date
    Oct 2001
    Location
    Jurupa Valley CA US
    Posts
    873

    Default

    Check out the DIY projects on the ANTENNAS page at ...

    http://www.work-sat.com

    Clint K6LCS
    Clint Bradford, K6LCS
    http://www.work-sat.com

  4. #4
    Join Date
    Aug 2011
    Location
    Davidsonville, Maryland (near Annapolis)
    Posts
    23

  5. #5

    Default

    If you have a 2m mobile with antenna, I'd start with a CJU for 70cm receive with an HT, and use the car for the uplink. Full duplex, and you can operate in the AC with the CJU out the window!

    73, Drew

  6. #6
    Join Date
    Aug 2011
    Location
    Davidsonville, Maryland (near Annapolis)
    Posts
    23

    Default

    Another thing I would like to eventually build are side-by-side quad or cubic antennas 2M/70cm.

  7. #7
    Join Date
    Jan 2004
    Location
    New Providence, NJ
    Posts
    2,431

  8. #8
    Join Date
    Jul 2006
    Location
    Montana
    Posts
    3,213

    Default

    Quote Originally Posted by K3EEZ View Post


    This design is totally worth your time! The simplicity, the *size*, the *weight*, the *compactness* and my god the *gain* from this little design is stunning.

    7dBi on 2m, ~10dBi on 70cm.
    It weighs next to nothing, practically indestructible with bendable elements (using #10 house wire), very cheap and great gain.

    Duplexers are so last year's model! Simplicity is very sexy, because it means there's less to fail. With this kind of design, there's very little that can go wrong. And the weight! My god, what a beauty.
    Last edited by KE7HQY; 08-19-2012 at 05:13 AM.

  9. #9
    Join Date
    Jan 2004
    Location
    New Providence, NJ
    Posts
    2,431

    Default

    Quote Originally Posted by KE7HQY View Post


    This design is totally worth your time! The simplicity, the *size*, the *weight*, the *compactness* and my god the *gain* from this little design is stunning.

    7dBi on 2m, ~10dBi on 70cm.
    It weighs next to nothing, practically indestructible with bendable elements (using #10 house wire), very cheap and great gain.

    Duplexers are so last year's model! Simplicity is very sexy, because it means there's less to fail. With this kind of design, there's very little that can go wrong. And the weight! My god, what a beauty.

    Pretty slick antenna! Are there plans out there for it?

  10. #10
    Join Date
    Aug 2011
    Location
    Davidsonville, Maryland (near Annapolis)
    Posts
    23

    Default

    The link I posted is to an article with basic instructions on how to build it. Unfortunately, I believe you have to subscribe to see the complete article.

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