Going Magnetic Loop

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flintstone mop:
He's one of us. The guy is an Am'er and some here have worked him. I do not know his call...may even be part of AMFONE.
The vacuum cleaner might be intersting.

KF7JAF:
Quote from: N8UH on October 21, 2011, 01:29:34 PM

This is all very interesting!

I was at Lowes yesterday, and found a roll of copper roof flashing. 3oz stuff. I was thinking that I could maybe make a loop out of PVC or even spa-flex, and wrap it up with a continuous piece of the flashing. The stuff isn't cheap at around $30 for a 10"X20' roll, but it's a heck of a lot more affordable than copper pipe around here. A 10' section of 1.5" copper pipe was over $100...  :o :o :o




This guy in the UK makes a 1/4 wave wire loop and feeds it with a transformer, He even patented it. I may mount something like this on my trailer for a camping antenna:

http://www.g0cwt.co.uk/magloops/new_page_6.htm

haven't tried it yet myself, but it's on my todo list

Dave, KF7JAF

WU2D:
Darn I saw the antenna that Spence talked about and all I can say is wow. He swore me to secrecy. He wants to write it up so we will have to wait. I can say that it solves several problems including remote tuning and uses no commercial parts other than a small motor - it is all plumbers delight construction.

Mike WU2D

K5UJ:
I just looked at this topic again.  What's up with all the interest in teeny loops and QRO on low bands?

This is like mounting a jet engine on an old British Mini and using it to try towing a house.

flintstone mop:
Welp Rob,
The stopping point for a loop was taking QRO. Buy a big 15KV vac variable and problem solved.
For the guys on small lots, the loop might put something on the air that would be pretty respectable, besides the Ham op trying to squeeze loaded antennas in a small space.
There is an AMer who uses his magnetic loop (K1QAR) and signal reports from those on this BB have said that it is a very respectable signal for a small loop.
My tri-bander Yagi just crapped out on 20-10 and I am going to build a magnetic loop to take legal limit for those bands.
I cannot  afford to keep hiring a rigor for $600 to take the antenna down for me to re-re-inspect and re-measure the traps and elements. The boom is probably full of water. The last time I had it taken down there was a waterfall from the boom after I removed the end caps. Shudda left them off and mounted anti bug screens instead.
PLUS on receive Magnetic loop antennas are a much quieter.
Hams in Europe use magnetic loops a lot.

Fred

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