Re: Tesla Coil RF Transmitter

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Terry Fritz <vardin@xxxxxxxxxxxxxxxxxxxxxxx>

Hi,

At 01:54 PM 9/12/2005, you wrote:
> > ........
>
> That's true  about a properly grounded Tesla Coil Dan, but the 
> Effective Radiated Power (ERP) would still be miniscule, probably 
> undetectable (electromagnetic waves) beyond about 500 to 1000m 
> distance I would think. It would be interesting to know if anyone 
> has tried detecting Tesla Coil signals with a good communications receiver.
>
> Chuck

Many people have tried to detect Tesla coil fundamental signals at a 
significant distance.  Any LW band receiver will work fine with very 
high sensitivity.  Richard Hull, I believe, got out to about a city 
block.  In general, a few hundred feet is pretty good for a large 
well grounded coil.

The much higher frequencies of RF noise given off buy the spark gap 
(1 to 1000++ MHz) can go much further and are the cause of TV 
interference and such.  At high frequencies, the small lead lengths 
of the primary wiring can be significant transmitters.

Cheers,

        Terry