Need Hy-Gain HG-37SS Tower Drawings

Discussion in 'Antennas, Feedlines, Towers & Rotors' started by W1MBB, Oct 22, 2021.

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  1. W1MBB

    W1MBB XML Subscriber QRZ Page

    Does anybody have engineering drawings for Hy-Gain HG-37SS tower?

    MFJ hasn't responded to multiple requests.

    I need copy to file for permit.

    Thanks

    Matt W1MBB
     
  2. WB2WIK

    WB2WIK Platinum Subscriber Platinum Subscriber QRZ Page

    It's right here. (Click on attached .pdf)
     

    Attached Files:

  3. W1MBB

    W1MBB XML Subscriber QRZ Page

    That's the manual, I need the engineering drawings, I have a photo of them (attached), but need hard copy.
     

    Attached Files:

  4. K0UO

    K0UO Platinum Subscriber Platinum Subscriber QRZ Page

  5. WB2WIK

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    Yeah, unfortunately the "installation specs" you already have (photo) aren't really engineering drawings.

    Engineering drawings show all the stress calculations, raw material specifications, plating schedule, TIAA wind speed ratings by calculation at different speeds, etc. U.S. Tower has those on line for all their towers, as an example, and they're all P.E. stamped.

    I've installed HG-37s, HG-52s and HG-70s over the years (mostly early 1980s when they were manufactured) and don't recall Hy-Gain ever providing those; but they may exist!

    If MFJ is not responsive (surprise!) you might try contacting Roger W8IO who now builds and sells aluminum roof towers and stuff but back in the day, he worked for Hy-Gain (pre-MFJ) and just might have such documentation.
     
    K0UO likes this.

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