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Category: Antennas

20m FT8 Hulaloop improvements

On 2023-01-122023-01-12 By lb5shIn AntennasLeave a comment

Yesterday I did some improvements to the "fixed" 20m FT8 "Hulaloop" magnetic loop antenna. I've insulated the end of the capacitor coax thoroughly, by folding the braid back a bit while sealing it with shrink tubing. I also reshaped the pickup coil from oval to more circular shape. The oval shape appears to give a …

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20m FT4/FT8 magnetic hulaloop

On 2023-01-082023-01-09 By lb5shIn AntennasLeave a comment

My weekend project this time was to build a cheap magnetic loop antenna. I'm talking really, really, cheap. No variable capacitor, no fancy or expensive parts. The goal was to build a monoband magnetic loop antenna. I'm tempted to call it "mono frequency" also, since there are no adjustments to it, but given the bandwidth …

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Building a vertical antenna with traps

On 2022-02-032022-02-03 By lb5shIn AntennasLeave a comment

Last week I bought a few cheap aluminium pipes and decided to build a discrete vertical antenna for my post stamp backyard. The goal was to make something that looks a little bit more professional than a cobweb of wires, and at the same time support the 10, 15 and 20 meter bands. If that …

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40m Hamstick, trampoline groundplane

On 2021-08-302021-09-08 By lb5shIn AntennasLeave a comment

My kids have a big trampoline in the backyard, and its built from a massive metal frame. In the beginning I joked about turning it into a magnetic loop antenna, but have settled with using it as a ground plane/counterweight for some antenna experiments. I've done 17m and 20m verticals with this one without problems! …

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WAE CW in QRSS…S.

On 2021-08-152021-08-30 By lb5shIn Antennas, ContestsLeave a comment

This weekend I attended the WAE CW contest as LC1R, partially because I wanted the CW practice, and a little for testing a new antenna I designed and built a couple of days ago. The contest was a poor choice for antenna testing, and this is clearly reflected in the participation. Contest QSOs could only …

Continue reading WAE CW in QRSS…S.

  • Market Reef, dates and operators
  • OJØ Q2/2023 – Quick update
  • 20m FT8 Hulaloop improvements
  • DARC 10m SSB
  • 20m FT4/FT8 magnetic hulaloop

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