My Magnetic loop antenna's

I was a radio op in the Royal Corps of Signals 1964-1972 and have enjoyed using cw ever since those early days. I got my amateur radio license in 1980 and operated with homemade qrp gear. As I have very little room for outside antennas I now use a couple of home made magnetic loops which are situated in my roof space. With these I can operate on 80 - 10 mtrs.

 Here are a couple of pictures of me and my 6'6" 80/40mtr loop and my 3' hf magnetic loop which covers 20-10mtrs.

I have completed a small pulsed psu using just one 555 ic, haven't tested it yet on my magnetic loop but it has been tested on a 4 inch 12v fan and I can slow the fan down to just  a few revs per min, down from several thousand a minute.  Will post details and a circuit dia when tested on the loop.

Video of pulsed power supply in use with geared motor.

A 2 minute recording of the CW end of 80mtrs using the indoor Magnetic loop with the FT101ZD

 mailto:g4kki.william@ntlworld.com also feel free to email with pictures of your own magnetic loop and maybe some building information to share with others.

DX WITH AN INDOOR MAGNETIC LOOP ON 80MTRS

The 80-40mtr magnetic loop has exceeded my expectations of it, all of the UK has been worked and out into Europe. The most unexpected QSO of late was on 19/September/2003 when I worked W1MK Rob in Boxford Mass on 80mtrs. I was running 70 watts with my TS530S on 3.508mhz. Rob was 599 and gave me a 559, I admit his antenna which he described as a 4 ele beam on 80mtrs did the work but when I said that a lot of Eu's were not audible because of the high noise level I think the magnetic loop proved just how well it works.

I have since worked W1MK several times using the magnetic loop and with qrp of only 4 watts, also worked several other stations in the USA on the East coast. Also out into UA9 with good reports on several occasions.

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