Re: Natural RF suppression?

To: tesla-at-pupman-dot-com
Subject: Re: Natural RF suppression?
From: "D.C. Cox" <DR.RESONANCE-at-next-wave-dot-net> (by way of Terry Fritz <terryf-at-verinet-dot-com>)
Date: Wed, 28 Oct 1998 17:44:51 -0700
Approved: terryf-at-verinet-dot-com

to: Gary, Bart

I'be said it several times before and I'll say it again --- never use
aluminum in any sparkgap design.  It will not conduct RF currents anywhere
nearly as good as brass or copper materials and will greatly reduce your
overall peak current.  As Terry Fritz pointed out in his recent work the
primary circuit is very critical to achieving peak currents in the system
and aluminum will reduce this.  We have also taken many measurements and
concluded there is no valid reason for using aluminum in an Tesla
oscillator spark gap.  If your coil is radiating it has more to do with the
design of the coil and top load.  R. Hull has also pointed out that a
properly tuned system is not a good radiator.  Don't use aluminum  -- it
will surpress RF but it's a poor choice.  Example, running a 700 HP drag
racing engine for occasional trips to the supermarket.

DR.RESONANCE-at-next-wave-dot-net

----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Natural RF suppression?
> Date: Wednesday, October 28, 1998 11:02 AM
> 
> Original Poster: Gary Lau  28-Oct-1998 0735 <lau-at-hdecad.ENET.dec-dot-com> 
> 
> >Original Poster: "Barton B. Anderson" <mopar-at-uswest-dot-net>=20
> >
> >Could you elaborate more how you constructed the aluminum standoffs in
> >between each copper pipe? I was discussing with someone today an idea
> >of using aluminum components in a sparkgap. Not to conduct energy, but
to
> >utilize aluminum's RF suppression characteristic to enhance quenching.
> 
> What RF suppression characteristic?  Are you saying different metals
> favor conduction at different frequencies?  I don't think so.
> 
> Gary Lau
> Waltham, MA USA
>