OT: EMP and Equipment - test-drb@ccmp.vtda.org

5 May 2005

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Subject: Re: OT: EMP and Equipment
   From: Paul Koning <pkoning at equallogic.com>
   Date: Thu, 05 May 2005 08:56:26 -0400
     To: cctalk at classiccmp.org
That's not how PolyPhaser (a major player in the professional
lightning/EMP protection business) uses the terminology.  Lightning
and (nuclear) EMP have rather different waveforms (EMP has faster
risetime).  So protectors designed to protect from lightning aren't
necessarily helpful for EMP.  (However, EMP protectors also do fine
for lightning.) 
They can call it what they like.  EMP is only the Pulse and does not 
say other than loosely imply the source.  While nuke has a faster rise 
time (wider bandwidth) the problem is essentially the same though the 
magnitude may be at issue. 

I also know Polyphasor Just outside this room is 30ft of Rohn25 with
another 10ft of mast and antennas.  Thats the hobby side of RF.  
I've also been in the commercial side of RF for some 35 years.

...
 Calling a lightning strike "EMP" is certainly
a confusing use of the
term. 
Only to those that only think bombs.

Allison