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Date: Sat, 28 Dec 2013 18:22:23 +0100
From: wolf_dl4yhf <dl4yhf@freenet.de>
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Subject: Re: LF: Loop Antenna Article
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Hello Warren,

I don't remember exactly in which group it was (possibly the *V*LF 
group) but there was an interesting topic about how to 'arrange' a given 
number of ferrite rods... the result was bundling them "in parallel" was 
much inferior than arranging them "in series" to form a long, but thin 
rod. This was proven by experiment here, but the 60 cm long ferrite 
antenna was still inferior to a single-turn air core loop with 60 cm 
diameter (on VLF).

All the best for 2014,
   Wolf.

Am 28.12.2013 17:26, schrieb Warren Ziegler:
> Hello the list,
>
>     I have been searching for an article posted a few years ago 
> concerning receiving loops with a title like "Calibrating Receiving 
> Loops Using DFC77" - as I recall the main thrust of the article is 
> that there is an asymptotic limit to the sensitivity of ferriite loops 
> as you increase the size, and that limit is soon reached.  Can anyone 
> point me to a copy?
>         (Searching for the article is what prompted me to check the 
> Yahoo group).
>
> Many thanks & HNY
>
> -- 
> 73 Warren K2ORS
>                 WD2XGJ
>                 WD2XSH/23
>                 WE2XEB/2
>                 WE2XGR/1
>                 WG2XRS/1
>