Comments on: A magnetic loop antenna for HF

By: Lucas

Lucas — Tue, 18 Dec 2012 01:14:40 +0000

Magnetic loop antennas can be designed with AN-SOF http://www.antennasoftware.com.ar

By: Bill Boskwick - VE4BOZ

Bill Boskwick - VE4BOZ — Sat, 19 May 2012 13:22:28 +0000

Great article and easy to understand…I will be constructing one of these very shortly, all I need is another 200pF capacitor.

73!
VE4BOZ

By: Les

Les — Tue, 03 Apr 2012 04:19:11 +0000

Can someone tell me the dimensions and capacitor value I’d need for one of these things just for 40 meters? I am interested only in QRP so I think a high voltage cap could be subbed for something more practically obtainable. I’d like to be able to use 3/4 in. dia copper pipe about 4 feet long on a side; is that an OK size? I’ve heard that I should be using just under 1/4 wavelength circumference, however. This would require about 8 ft. pipes; kind of spend-ee. I’m really cramped for space but I could do a close to 8 ft. square hoop.

Les

By: Joe

Joe — Mon, 01 Aug 2011 12:55:44 +0000

Jimmy Carey –

The magic number is 25.4, that is, 25.4 mm = 1 inch. It’s a cinch! Of course I draw buildings all day, so it’s useful to me. Other than length, the other really useful one is area 1 sq. m. = 10.76 sq. ft.

As long as you can remember those two, you can compute your way to anything else.

By: Marian Anghel YO2MBU

Marian Anghel YO2MBU — Fri, 24 Jun 2011 11:48:22 +0000

I have build and use magnetic loop antenna, and I realy like because is simple and real nice performing in one city where sometime the noise is at S5 S6.
Thanks
YO2MBU

By: alun gw0fjq

alun gw0fjq — Fri, 25 Mar 2011 20:03:43 +0000

hi there can you let me know where i can buy a ■1 20-400pF high voltage variable capacitor
alun 73 tnx

By: jjones444

jjones444 — Tue, 30 Nov 2010 16:10:10 +0000

Making my own magnetic loop antenna for HF sounds confusing and complicated. Is there a version I can buy already-made rather than buying all the materials to make my own? I realize that it will probably double the cost or something, but I just don’t have the time to do something like that.

By: Jimmy Cary

Jimmy Cary — Sat, 13 Mar 2010 06:42:43 +0000

I was wondering if you have this drawing avalible in Inches? Also I am a little confused on the coax connection to the loop???

Would you have any pictures you could share??
I teach a few antenna classes a year, and this
would be a great club project. Please e-mail
me more information on this antenna, as I
would really like to develope this
into a Club Project.

Thanks!
Jimmy:)

By: marcio

marcio — Wed, 09 Dec 2009 13:33:02 +0000

hi broo,

how many watts this antenna suport? 100w?

tks
py2xta

By: Ed

Ed — Thu, 30 Oct 2008 19:54:22 +0000

Hi, Stan….

I live in a townhome and have a coaxial trap dipole in the attic. I just came across your message on the 32″ loop. Wonder if you are still using it and what you think of it. I’m looking for a second antenna in the attic.

Thanks…

Ed WA9MNF