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Re: Tesla Coil RF Transmitter

Original poster: "Gary Peterson" <gary@xxxxxxxxxxxx>

Original poster: FIFTYGUY@xxxxxxx

Original poster: Sparktron01@xxxxxxxxxxx

Terry, ALL
. . . 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)..

 . . . Nothing was detected above white noise level.
Regards
Dave Sharpe, TCBOR/HEAS
Chesterfield, VA. USA

What did Richard and Bill use for their receivers?

I briefly asked Richard Hull about this yesterday. He simply said they used a "Very Low Frequency" receiver - presumably they were looking near Fres. He said there was *nothing detectable* past a mile from Nemesis running at 13kW input.

OTOH, Dr. Resonance and others have been able to illuminate gas tubes using a receiving coil of the same dimensions as the transmitter, at about that same distance, running at about the same power. It doesn't take much oomph to get a gas tube lit, but it would seem at least some tiny power is detectable that far away - if you're willing to have a big, super-sensitive receiver.

-Phil LaBudde

In the "*TC Builder's Guide to the CSN" Richard recommended that advanced coilers perform the grounded "free coil" receiver demonstrations with a large enough terminal capacity "so sparks will not issue" (see the Sept. 3, 1899 commentary).

Regarding the tests mentioned by Dave and also reported in the "TC Builder's Guide" commentary for Jan. 2, 1900, even at a power level of 9 kVA Nemisis would have been throwing 12-foot sparks. Also, it appears that a receiving transformer, with or without a secondary, was not used. Because of these factors, the results reported above are not a fair indicator of a TC's capability as an RF transmitter for telecommunications purposes.

Gary