Re: Tesla Coil RF Transmitter

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Dan" <DUllfig@xxxxxxxxxxxxx>

How where they trying to detect it? Tesla said that at the low end of 
the spectrum, his coil would put out very little EM energy, so if 
they where trying to detect the fundamental frequency with a radio, 
they would not have gotten anything.

Dan

----- Original Message -----
From: <mailto:tesla@xxxxxxxxxx>Tesla list
To: <mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx
Sent: Tuesday, September 13, 2005 9:28 PM
Subject: Re: Tesla Coil RF Transmitter

Original poster: <mailto:Sparktron01@xxxxxxxxxxx>Sparktron01@xxxxxxxxxxx

Terry, ALL

Supporting Terry on this one.  Richard Hull tried to detect fundamental
of Nemesis, max pickup distance was < 2 city blocks.  Also had fellow
experimenter Bill Richards who is a lowfer HAM try to detect 54kHz
fundamental on opposite side of Richmond (~ 20 mi as crow flies)..

ZIP, ZERO, NADA.  Nothing was detected above white noise level.

Regards
Dave Sharpe, TCBOR/HEAS
Chesterfield, VA. USA


 > Original poster: Terry Fritz 
<<mailto:vardin@xxxxxxxxxxxxxxxxxxxxxxx>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
 >
 >