I wonder what the permeability is of a jelly filled donut?
Did the bagel toast or just get stale?
On 3/25/2012 11:31 AM, Colin Lamb wrote:
> Toroids do not need to be wound on powdered iron or ferrite. A core with no
> permeability works. The advantage of such a core is the self-contained
> energy. You can wind a core on teflon or some other material. The
> disadvantage is that more wire is needed.
>
> A number of years ago, I made an antenna tuner for field day and wound the
> coil on a bagel. It worked fine and got people's attention. Much easier to
> wind on week old bagels.
>
> That may have been the same year my final was a 5U4G.
>
> 73, Colin K7FM
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>
--
73,
Gary K9GS
Greater Milwaukee DX Association: http://www.gmdxa.org
Society of Midwest Contesters: http://www.w9smc.com
CW Ops #1032 http://www.cwops.org
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