[Lowfer] MP in MA (hijacked thread now about loop antennas)

Bill Ashlock ashlockw at hotmail.com
Tue Sep 14 19:37:59 EDT 2010





Craig,

When you work out the math and include the AC resistance, ground losses, etc, two loops in parallel or series would have about the same radiated signal. The problem with the series configuration is that it is much more sensitive to variations in spacing caused by the wind which typically detunes the loop enough to have a significant effect on it's radiation.

Bill

> Date: Tue, 14 Sep 2010 16:54:50 -0400
> From: craig at wasson.com
> To: lowfer at mailman.qth.net
> Subject: Re: [Lowfer] MP in MA (hijacked thread now about loop antennas)
> 
> I may need to re-read my articles about transmitting loops, but can't
> remember why two #10 conductors in parallel are better than taking the same
> wire and making it a 2-turn loop.    Does the series resistance double while
> the radiation resistance does not fall by half with a two turn loop?
> 
> Hmm... I guess the series resistance would quadruple.  Maybe I answered my
> own question?
> 
> Thanks!
> 
> Craig - N6IO
> 
> (Beacon IO off while I get my transmitting loop set up)
> 
> 
> 
> >The wire is two pieces of #10 PVC covered - in parallel: Like an old open
> wire feedline.
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