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Re: [IRCA] 4 Foot Box Loop Plans
At 22:04 1/9/2009, you wrote:
>In extensive testing performed back in the 1970's, it was fairly well determined that a 4' loop would have sharper nulls than a comparable 2' or 3' loop. As Rick states, a balanced loop - whether directly coupled through a pre-amp or inductively coupled via a link coil, offers sharper & deeper nulls, as well as a more nearly symmetical pattern as compared to an unbalanced loop.
Was there a reprint or some other record of that testing, Russ?
My present vintage loop (it's Nelson's alt-az design) seems pretty well balanced per direction finding accuracy and symmetry, and the nulling is good, but I was surprised at how well a Sanserino 2' loop compared in nulling when I had them side by side 30+ years ago. There was never a proper record of that comparison however.
best wishes,
Nick
*****************************
Nick Hall-Patch
Victoria, BC
Canada
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