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Date: Thu, 29 Jun 2006 00:44:28 +0100
From: Peter Dodd <g3ldo@ukonline.co.uk>
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Subject: Re: LF: LF/HF/VHF Spark?!
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Martin Mac Gregor wrote:

>
>The point of this saga...
>
>Latterly we discovered that Industry Canada (DOC) had too become involved on
>an investigative basis; we learned that during our exhibitions, local
>broadcasting and even low band TV in the immediate locale was reportedly
>obliterated but certainly interfered with.
>  
>
One weekend, during the early experiments on 136kHz from Amberley 
museum, we had a group come and give a demonstration of Tesla coils. I 
set up a mobile receiving station that had the ablility to tune from 70 
to 180kHz (the fundemental frequencies of these coils) to see how strong 
the electromagnetic radiation from these coils would be. I couldn't 
receive anything, even when the mobile receiver was located 200m from a 
coil giving off a one metre length spark. I don't think the receiver 
setup was that deaf because I could hear the usual commercial and 
broadcast stations in the band. These results certainly surprised me - 
perhaps I should have looked in the VHF bands.

Peter, G3LDO