My new loop antenna
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Uploaded by PA3DMI on Feb 23, 2009
I made a HF-loop antenna from alu tubing, 1 meter in diameter.
It tunes between 10 and 22 Mhz and works ok :-)
Made some qso's with it so I'm happy.
Also some qso's during the PACC contest 2009 but with an FD3 on the attic.
Best 73,
PA3DMI - Jarno
Uploader Comments (PA3DMI)
All Comments (11)
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My faraday loops have always been 1/5 D to load 50 ohms. Also try bending the Faraday loop into a flat triangle, so the bottom 1/3 is flat to the main loop.
Output is peaked with a couple of turns of wire and an LED.
Happy hunting :)
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@PA3DMI Thanks for the info. I don't think I'll be operating anywhere near 100 watts, but at least now I know what to use. Variable capacitors are very tricky to understand. I've got the tubing and wire set up, last step is the capacitor. Thanks!
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Nice work! Very effective and very simple. I can't wait to start constructing mine =)
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Really nice job.
Tom, ak2b
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Can that loop be made at 1.5 or 2 meters in diameter? Would it make it a bit more "efficient" as a radiator? I want to make as big of a loop as I can, but 2 meters is about as large as I can go... I want to have it work on 30 meters. Thanks for your video and feedback... 73 de NW7US
NW7US 1 year ago
@NW7US Hi Thomas, yep it is possible to make it larger but not very handy ... but the bigger the better.
My version works well on 30 although only 1 meter
Let me know.
73's from Amsterdam
Jarno - PA3DMI
PA3DMI 1 year ago
@PA3DMI Another question or two: is the loop a directional antenna? Must you aim the antenna to your target? Also, for HF, do you want the antenna loop up vertically, or laying down horizontally? 73 de NW7US
NW7US 1 year ago
@NW7US Hi again,
You can aim the antenna when vertically, if you lay the loop down I don't see any change.
73,
Jarno - PA3DMI
PA3DMI 1 year ago
What type of variable capacitor are you using?
kj6bbs 2 years ago
Hi Chris,
The capacitor is an old 500pF one, I got it for a fair al long time ago. It's about 12 cm long and the platespacing is 3 mm so I can use it with about 100Watt otherwise it's sparking a lot :-)
73's from Amsterdam
Jarno - PA3DMI
PA3DMI 2 years ago