Re: SSTC - experiments

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Harold Weiss" <hweiss-at-new.rr-dot-com> 

Hi Gavin,

My thought on it was that the Jacob's ladder was as a secondary attachment
to the SSTC.  That would lengthen the possible antenna.  A short length,
like a discharge rod, wouldn't cause much of a problem.  But, having a
transmission line to a 4-5' ladder, might be long enough to allow efficient
radiation of a harmonic, and thereby cause a problem.  A magnifier attempt
back in 95 produced so many harmonics that it pretty much wiped out UHF,
VHF, FM, CB and AM, within about 5 miles of it.  I don't know why it stomped
on everything so well but it did make a good jammer.

David E Weiss

 > Original poster: "Gavin Dingley" <gdingley-at-ukf-dot-net>
 >
 > Hi Harold,
 > wouldn't the rod have to be rather long to be an efficient radiator of
 > electromagnetic waves, even at 1MHz the length of the rod would have to be
 > about 300m/4 = 75m (25ft). In conventional quarter-wave marconi antennas
the
 > base of the radiating element can be bottom loaded with an inductance, or
 > top loaded with a "top-hat" (i.e. a lump of conductor with large surface
 > area to act as an isotropic capacity), in either case the element is only
 > tuned to the correct frequency for maximum power transfer, I don't think
the
 > radiation resistance is improved (i.e. the amount of input power which is
 > converted to radiated EM waves). At the end of the day the best EM
radiator
 > is an element of the correct resonant length, not a coil with a top load
 > such as is the case with TCs. This is as I understand it any way, please
 > correct me if I am wrong.
 >
 > This particular point has made me wonder about the Colorado Springs
 > transmitter. The magnifier set-up consisted of a base fed coil, the top of
 > which was connected to a long conductor (cable) terminated with a
conducting
 > sphere (wooden frame covered in copper foil). To me this looks like a
 > Marconi quarter-wave with base coil loading and capacitive top-loading.
 > Although the length of the conductor was short compared to a 50kHz wave,
it
 > must have radiated EM waves to some relatively large extent? Of course the
 > Wardenclyffe Tower and modern TC/magnifier construction has no such length
 > of conductor running from the secondary coil to the top-load. I wonder if
 > many of Tesla's results/observed phenomena at CS were due to EM from this
 > length of conductor, and so such phenomena would not have been so apparent
 > at Wardenclyffe or any modern magnifier constructed today. Tesla insisted
 > that the best apparatus for HIS wireless did not radiate EM waves, as this
 > constituted a loss or waste of power. Yet the CS station did have a length
 > of cable that must have acted as a radiating element. Well perhaps someone
 > more qualified than me can suggest an answer to this.
 >
 > Regards,
 >
 > Gavin
 >
 > ----- Original Message -----
 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > To: <tesla-at-pupman-dot-com>
 > Sent: Thursday, January 08, 2004 6:42 PM
 > Subject: Re: SSTC - experiments
 >
 >
 >  > Original poster: "Harold Weiss" <hweiss-at-new.rr-dot-com>
 >  >
 >  > Hi Dan,
 >  >
 >  > One thing you missed is that the rods may constitute an antenna, and
may
 >  > bring Uncle Charley for a visit.  Coils are classified as scientific
 >  > equipment and not transmitters due to no antenna.  Add that antenna and
 > then
 >  > your in trouble.
 >  >
 >  > David E Weiss
 >  >
 >  >  > Original poster: "Mccauley, Daniel H" <daniel.h.mccauley-at-lmco-dot-com>
 >  >  >
 >  >  >
 >  >  >
 >  >  > Shaun,
 >  >  >
 >  >
 >
 >
 >