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multi-turn magnetic loops

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November 22nd 08, 09:41 AM posted to rec.radio.amateur.antenna

Dave Oldridge Dave Oldridge is offline

Dave Oldridge is offline

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multi-turn magnetic loops

Steve wrote in news:cde8dec9-5103-41c0-896b-
:

I've seen several programs that will help you calculate the precise
dimensions of a single-turn loop, given the composition of the
radiating element, its thickness, and so on. However, none of these
programs are written to cover the case of a two or more-turn loop.

Does anyone know of a program that will offer guidance in the
construction of a two or more-turn loop?

Dunno about a program. I made a 2-turn transmitting loop for 160 one time,
using a variation of Ted Hart's matching scheme. I did it by cutting it a
bit long, then trimming it with an analyzer to see where it resonated.
Eventually got it to 1:1 at about 1890khz where I wanted it and it received
as well as could be expected. Transmit efficiency was on a par with a
hamstick.

--
Dave Oldridge+
ICQ 454777283
VA7CZ

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