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RE: Mini coil earth?



Original poster: Jim Lux <jimlux-at-earthlink-dot-net> 

At 08:32 AM 10/3/2003 -0600, you wrote:
>Original poster: Thomas <tom-at-pwrcom-dot-com.au>
>Thanks Jim, I'll do that.
>
>It's a pity ESD bench mat material (anti-static mat) would be no good for
>this, as I have tons of it.

Aluminum foil stuck to a piece of carpeting or canvas would work well.  As 
would chicken wire.  Don't bother fooling with copper.. more trouble than 
it's worth.



>I do have some 100mm wide copper tape (~1mm thick) that I could solder
>together with some copper braid (so that it folds up quite small).
>
>
> > Original poster: "Jim Lux" <jimlux-at-earthlink-dot-net>
> >
> > Make a chicken wire or hardware cloth counterpoise.  The
> > radius should be
> > about the height of the topload above the counterpoise. Square, round,
> > hexagonal, matters not... Ground the RF ground (i.e. the bottom of the
> > secondary) to the counterpoise.  Hook the counterpoise to the
> > green wire
> > (safety) ground too, but that's not what you're depending on.
> >
> >
> >
> > almost all the RF current will be carried in the counterpoise.
> >
> >