Thread: Eric Dollard
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Old 09-02-2017, 08:39 PM
vrand vrand is offline
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Join Date: Jul 2008
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Quote:
Originally Posted by t-rex View Post
The location of the grounding was at our "Camp David" facility at Bolinas, CA. Commonweal had it destroyed, just like Landers. The layout was a multiple star configuration, which radiated out from a common buss of 1 inch copper tubing. See the Bolinas "Barbara Boxer Report" for photos of Camp David.

I have a hard time believing that Brazil thing. Show me photos of the Kilowatt meter turning?

73 de n6kph
Hi Eric.
Thank you for the info on Bolinas, California radio site.

For grounding designs I looked at the Military Handbook, MIL-HDBK-419A, 29 DECEMBER 1987
MILITARY HANDBOOK
GROUNDING, BONDING, AND SHIELDING FOR ELECTRONIC EQUIPMENTS AND FACILITIES
VOLUME 1 OF 2 VOLUMES
BASIC THEORY


PDF Link:
https://www.google.com/url?sa=t&rct=...bPeY0-jZllr8Ew

And they talked about the Star configuration as follows:

Quote:
2.5 TYPES OF EARTH ELECTRODE SUBSYSTEMS.

2.5.3 Buried Horizontal Conductors.
Where bedrock is near the surface of the earth, the use of driven rods is
unpractical. In such cases, horizontal strips of metal, solid wires, or stranded cables buried 0.48 to 0.86 meters
(18 to 36 inches) deep may be used effectively. With long strips, reactance increases as a factor of the length
with a consequent increase in impedance. A low impedance is desirable for minimizing lightning surge voltages.
Therefore, several wires, strips, or cables arranged in a star pattern, with the facility at the center, is
preferable to one long length of conductor.
Quote:
1.10.1 Earth Connection. A radial, or star, configuration is preferred to other types of earth electrode
subsystems because of its lower impulse impedance (see Volume I, Section 2.6.3). Where ENIP protection is to
be provided in addition to conventional signal and safety protection, supplemental radials may be added to the
conventional system.
Quote:
2.6.3 Transient Impedance of Electrodes. The expressions given for electrode resistance assume perfect
conductivity for the conductors of an electrode. Such an assumption introduces very little error in the
calculation of the electrode dc resistance, but if the electrode must dissipate the impulsive energy of a
lightning stroke, its impedance as a function of time must be considered. When a single star electrode,
containing 305 meters (1000 feet) of conductor, is subjected to a surge of lightning current, the initial value of
its effective impedance is about ten times the dc resistance (2-11). This initial value is termed the surge
impedance. As the wave of energy propagates through the electrode system, more and more of the wire of the
electrode makes effective contact between the propagating energy and the medium which dissipates the energy.
It is clear that a given length of wire will couple lightning energy more efficiently into the earth if the
electrode is in the form of a star than if it were a single conductor.
This is illustrated in Figure 2-13 where it
is indicated that as the energy surges down an electrode (at a velocity in the neighborhood of 100 meters (333
feet) per microsecond), the transient impedance of the electrode decreases and approaches the dc resistance
value.

In your 2011 talk to the Santa Barbara Amateur Ham Radio audience presentation, titled, Eric Dollard - Longitudinal Energy (Scalar Waves - Mutual Induction - Wireless Transmission of DC)

Video Link:
Youtube video.https://www.youtube.com/watch?v=kH3ETTd6bPI

You talked about shortening the 40 & 80 meter antenna by winding it into a coil, so for 1 amp into the coil, 400-500 amps of current circulation into the ground.

You talked about the need for an extremely low ground impedance of 0.1 to 0.01 ohm to accomplish this transmission.

At the 38 min mark you talked about the 24 ground rods into the salt marsh at San Andreas, San Gregorio, and a third unnamed fault all converging. And 500 feet of silicon bronze wire all connected to a massive copper bus for transmitting from Los Angeles to San Francisco without an antenna.

In the Mil 419 Handbook they designed to 10 ohm, and the NEC only requires a maximum of 25 ohm ground impedance.

I was interested in your 24 ground rods and 500 feet of silicon wire design if you could elaborate on it.

Did the ground rods form a circle, or radiated out from a central point? Did you then add horizontal radial silicon bronze radiating out from the ground rods? Was the wire buried? Wire gauge? Bus size? How you achieved 0.1 ohm ground impedance?

Thanks
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