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Many thanks to SWLing Post contributor Giuseppe Morlè, who writes:
Dear Thomas,
I’m Giuseppe Morlè, IZ0GZW, from Formia, in central Italy on the Tyrrhenian Sea.
I’d like to show you my antenna board for shortwave and mediumwave listening with portable receivers like the Tecsun PL-660.
The board has two distinct circuits:
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- A small-diameter loop with two turns for shortwave reception (3.5–18 MHz).
- Three ferrite rods with 30 turns each, plus a four-turn link coil that carries the signal to the receiver for mediumwave reception.
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In the video, you’ll see how the board works on its own, and then how performance improves when I connect a 15-meter wire and throw it over the balcony of my house. In that case, the signal becomes much stronger.
Tuning is done with a 900 pF variable capacitor. To listen to mediumwave, I simply disconnect one side of the shortwave loop. With just that single variable capacitor, I can tune all of the bands.
It’s a surprisingly effective antenna for small portable receivers, and it’s built entirely from recycled materials—at no cost.
I hope you enjoy it. Greetings to all the friends of the SWLing Post.
73, Giuseppe Morlè, IZ0GZW
Click here to view on YouTube.
Many thanks, Giuseppe, for once again sharing your creativity with us. I’m always impressed by the antennas you design and by the performance you achieve—especially considering they’re largely homebrewed from recycled parts. That’s radio at its very best!
[Note that his video is in Italian, but you can turn on subtitles for your preferred language.]
