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Technical comments or clarifications appreciated!
-------- forwarded message --------
From: MARJORIE LUNDQUIST <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] (EMF-List)
Date: 10 Feb 00 09:37:31 MST
Subj: Comment on "Stray voltage story (Beal) (Kingsbury).."
Bill Kingsbury recently reported:
> Stetzer said he discovered more than current overflow. Based on
> his oscilloscope readings, he found that the current flowing
> through Quarne's and other nearby farms was not regular
> alternating current, or AC, which flows 60 times a second or
> 60 hertz. He says he saw frequency similar to microwaves.
I just want to remind everyone that in 1995 it dawned on me that
the health effects that were being reported around electric power
lines were exactly the same as those reported around microwave
transmitters. At first I thought there must be microwave signals
on electric power lines, though I couldn't imagine where they were
coming from. But after two years of library research, I discovered
the culprit was not microwaves but kilohertz-frequency
radio-freqeuncy signals diliberately placed on power lines since
about 1912 by electric power companies; this is called "power line
carrier" and has been used worldwide on transmission lines since
about 1930 (until the last few decades, when experimentation began
with use of fiber-optic cable).
It is also being used on distribution lines in some (but not all)
systems. I believe the UK uses power line carrier on distribution
lines. Because the RF field around a power line that is carrying
an RF signal has a very different configuration from the field
around a transmitter or antenna, the "effective frequency" of the
RF field around the power line is much higher than the actual
frequency. Thus a kilohertz RF signal on the power line has an
"effective frequency" in the microwave range; that is, it produces
the same health effects as a microwave signal around a transmitter
would produce. In all likelihood, what Stetzer saw on his
oscilloscope was the "effective frequency" of the RF field from
power line carrier; and that would indeed show up as a microwave
frequency.
Let me repeat what I said in the paragraph above using terminology
familiar to electrical engineers. An RF field around a transmitter
or an antenna is called an "efficient antenna" field (the near and
far fields occupy distinct, different regions of space). An RF
field created by an RF signal travelling on a long straight wire,
such as an electric power line, produces an "inefficient antenna"
field which has a very different configuration; the near and far
fields occupy the same region of space, and the radiation travels
roughly parallel to the wire, not away from it in a perpendicular
direction.
Because an "inefficient antenna" field has the near and far fields
superimposed upon each other, the field that is actually observed
is the combination; this is much "choppier" than a pure radiation
field would be, and has many of the characteristics of a field of
much higher intensity. Thus a kilohertz "inefficient antenna"
field is very much like a microwave "efficient antenna" field, both
in terms of the biological effects produced, and also in what it
looks like to certain measuring or detection instruments.
It may also be of interest to people to know that Stetzer is not
the first person to see this kind of thing. There is a fellow in
Guilford, CT, who has also found this around the power lines there;
but he has been very secretive about it and has not wanted to share
with many others what he has. He made a video tape but would not
let it out of his possession. I am sure he has recorded this same
RF field from power line carrier, but without his co-operation it
has been impossible to demonstrate anything.
I am quite sure that what Stetzer and the fellow in Guilford have
found has nothing to do with 3rd and 5th harmonics of power
frequencies. I looked into these harmonics quite thoroughly a
decade ago and was unable to connect them in any meaningful way to
the health problems that are associated with proximity to power
lines. [These harmonics may be harmful to sensitive electronic
equipment, and they may need to be eliminated for that reason, but
this has nothing directly to do with health problems, in my
professional judgment.]
My position on the stray voltage problem on farms is that this is
an RF problem. It has all the characteristics of an RF problem,
including the fact that farmers have found that eliminating extra
ground wires in their electrical sytem makes things better (reduces
the health problems from "stray voltage"). This is exactly what
would be predicted, if the problem is an RF problem, not a 60-Hz
problem.
-- Marjorie Lundquist
*********************************
Marjorie Lundquist, Ph.D., C.I.H.
Bioelectromagnetic Hygienist
P. O. Box 11831
Milwaukee, WI 53211-0831 USA
*********************************
Another related bit of information:
BK
> From: "Petersen, Wally" <[EMAIL PROTECTED]>
> Date: Wed, 2 Feb 2000
> Subj: Net current controls
>
> Please take a look at our web site sncmfg.com to view some
> material on our CBT (Current Balancing Transformer). This is
> the same idea Gene Preston had. We built one for his application
> in underground distribution cable for Austin Electric. As far as
> we know, it was never installed properly and they lost interest
> when Gene retired. We adapted the same concept to mitigate stray
> voltage/currents on dairy farms. The first model designed for
> the secondary side was not 100% effective. We now have 15kV and
> 25kV models for the primary side which are in fact nearly 100%
> effective in returning current on the neutral rather than through
> the farmer's grounding system and canceling the emf in the
> process. Whenever they are installed, they do what we promise
> which is why we offer a money back guarantee.
>
> However, the investor-owned utilities are nervous since it goes on
> the primary and refutes the story that they have floated forever
> that the problem is caused by defective farm wiring. The primary
> (hi voltage) has nearly 200 times more driving force to return
> through the ground than the customer's secondary and it simply
> uses the path of least resistance (ohms law) which is the
> customer's grounds.
>
> Feel free to call anytime. 800 558-3325.
> Cordially,
> Wally Petersen - Telecom Division
-------- original message --------
From: crt99 <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Date: Wed, 09 Feb 2000
Subj: Re: [EWAR] Electricity's dirty little secret
> Stetzer said he discovered more than current overflow. Based on
> his oscilloscope readings, he found that the current flowing
> through Quarne's and other nearby farms was not regular
> alternating current, or AC, which flows 60 times a second or
> 60 hertz. He says he saw frequency similar to microwaves.
Conventional "oscilloscopes", or more likely "transient waveform
recorders" (like those made by Dranetz) used to monitor and record
line voltage frequency (60Hz) do not respond to microwave
frequencies. Microwave frequencies are orders of magnitude higher
in frequency, and are not detected by the monitors.
Also, microwave frequencies have wavelengths of only a few
centimeters, and cannot travel through power line wiring and/or
distribution transformers. This is why waveguides are typically
used for microwave energy.
What they are talking about is in reality called "poor power
factor", and is a real problem. It stems from the fact that
electronic loads, like computer power supplies and electronic motor
spped controls only draw current for a brief portion of the sine
wave voltage waveform of conventional 60Hz utility power. For the
entire rest of the time, no current is drawn at all. Typically,
these electronic loads draw power at the very peak of the sine wave
only. This results in "saturation" of distribution transformer's
iron cores, as they are not designed to sustain such high peak
currents for such brief periods. The end result is distortion of
the sine wave voltage delivered by the power company. This is
readily discernable if an oscialloscope is connected to a wall
outlet virtually anywhere in the U.S. It is this distortion that
the author was apparently talking about.
Because of the "safety ground wire" common everyplace nowadays,
and the fact that leakage currents inevitably exist in electrical
equipment, some of these distortion-induced harmonics appear
"between" ground points, such as your home and your neighbor's, or
the light pole outside the barn and the AC outlet inside. Theese
harmonic currents flowing in the ground between steel poles,
electrical conduits and circuit breaker panels, and distribution
transformers, etc. produce voltage gradients across the earth
(dirt, concrete, etc.) that may reach up to 10 or 15 volts. Add to
this the damp, electrically-conductive fluids found on a farm, and
you have a perfect way to conduct them into the animals' bodies.
Although this is a real problem, and farm animals are at
significant risk, there is no microwave - or even VHF/UHF RF
radiation involved. The harmonics which result are typically
the third and 5th harmonics of the power line frequency, i.e.
180 and 300Hz.
Technology exists to combat this power line pollution, it's called
power factor correction, and is now required in all electrical
equipment sold in Europe that consumes over about 50 watts. Such
correction is not yet required in the U.S., but I expect it may be
in a few years.
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