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K-SARJ Technical Bulletin: Effect Of Near-Total Solar Eclipse On High Frequency Propagation Distances Using Cyclical Multiple Frequency Weak-Signal Propagation Reporter (WSPR) Transmissions

April 21, 2024 by KM1NDY

Doing a little hammy ham ham research during the solar eclipse at the Ole Farm-O-La…Welcome to the first Technical Bulletin of the KM1NDY – Secret Amateur Radio Journal.

Hull 2024 Effect of solar eclipse on WSPR transmissionsDownload

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2 Commments

  1. John says:
    April 26, 2024 at 10:13 am

    Hi Mindy

    Found you gQQgle_ing research for a kite antenna
    How We Flew An End-Fed Half Wave (EFHW)
    https://km1ndy.com/kite-antenna/
    WOW Thanks …

    I note too you are  lQQking for a DIY receiver
    May I suggest one I bult back in the day a delightful 1988 design by WA3RNC
    http://www.arrl.org/files/file/Technology/tis/info/pdf/28814.pdf

    Then take  pEEk  at his current POTA/SOTA rig
     https://www.wa3rnc.com/store/penntek-tr-45l-qrp-transceiver
    And well documented on qrper.com

    My qrz.com page notes other receivers used while tooling up for the recent eclips and an outstanding QRPLabs VFO for DC Receivers

    My next facet on this diamond of ham radio
            …build and fly a kit beacon…
    AND maybe balance such that if the string breaks
    or caused to separate as a result of a blow, shock, or strain can/will fly on it’s own…hi HI

    72 73
    John
    N3AAZ

    1. KM1NDY says:
      May 27, 2024 at 9:18 am

      Hi John!

      Sorry for the late reply! I hope you managed to get your beacon on the air!
      Thanks for the receiver tip too. It just might be the next project I try.

      Just a few weeks ago, AA1F and I actually had the opportunity to fly the kite for International Marconi Day. It was really cool! I used an 17M EFHW 49:1 antenna matter from 2 140:43 toroid cores that I superglued together with RG8C-U coax. I sent the antenna and coax up the kite this time, and had it in the air over 100 feet. There was very little wind though and overall it struggled to stay up, though we did make a few dozen contacts. Great fun!

      Good luck and let me know how it goes!

      Mindy

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