"Szczepan Bialek" wrote in message
.. .
But is the another phenomenon. The Luxembourg effect.
The dipole radiate the doubled frequency.
S*

Ah yes - the famous "is it a dipole or is it a dipole?" test. Of course,
it wouldn't discriminate between a dipole and a yagi (staggered or
phased?)

Luxembourg effect? Harmonics?

Harmonics are in string, plate, piano box etc.

Pendelum and LC circuit have the one frequency only.

LW from the dipole mast were (and are) received on MW receivers at exactly
doubled frequency.
S*


Yup. Harmonics. The Luxembourg effect was cross-modulation. I'd completely
forgotten about it.

Was it a dipole or was it a dipole?

Regards, Ian

On Fri, 1 Jun 2012 13:16:33 -0700, "Sal M. O'Nella"
wrote:

There is real math (imagine that!) to address the notion of "stealing power
from a nearby transmitter." Free-space attenuation is given by the formula
20 log Rf + 37dB, where R is the range in Nautical Miles and f is the
frequency in MHz.

I beg to differ and hair split. The free space attenuation formula
works nicely at a distance of about 1 wavelength or more away from the
antenna. However, at the broadcast band wavelength of about 300
meters (about 1000ft), any attempt to steal power will probably
require near field calculations, or perhaps just transformer action.
http://en.wikipedia.org/wiki/Near_and_far_field

Next best bet: Get within 500 feet of a 50KW AM station, say KFI, AM-640 or
KBOI, AM-670.

RF safety exposure limits at 500ft for a 50KW AM station and 0dBi
antenna gain, yields about 1.5 mw/cm2. The safe limit is 100mw/cm2.
http://kb9mwr.dyndns.org/n9zia/rfsafety.main.cgi
Therefore, it is safe to approach the antenna without fear of having
your brain morph into Mr. Bialek. At about 60ft is becomes officially
unsafe.

Per the formula, the coupling loss will be about 13 dB,
making 2500 watts of power available to you at that location. However, to
realize that power, you need an antenna with near unity gain at that
frequency. Any guesses as to how much they cost? Try $Millions. (It's
called a 600-foot tower.) Much better to call your local utility and tell
them how much you appreciate their service. Resolve to be more realistic
about power-robbing schemes.

Technology to the rescue. Once upon a time in the 1960's, I lived in
Smog Angeles and worked part time next to an AM station. Surrounding
the antenna was the requisite chain link security fence, which had
several gaps in the fence for access gates. If one of the gates was
left open, forming a 1 turn coil, I could draw a small arc across the
gap with a clip lead. I wanted to fake an electrocution by bridging a
gate with both arms, but chickened out. When the station personnel
found out what us juvenile delinquents were doing, they promptly
buried a wire across each gate to short out the gaps, and changed the
locks on the gates.

Incidentally, locating the Gertsch/Singer (manufacturer of
communications service monitors) factory next to an AM broadcast
station (I forgot the call sign) in LA was not a great idea.

COMING NEXT ON THE POWER ROBBER CHANNEL: Tap into your neighbor's garden
lights -- it's easy!

Yech... The next revolution in home alternative energy will be the
nuclear powered underground water heater and the solar powered steam
plant. Dispose of hot nuclear waste and run your water heater at the
same time. If you do the math, solar steam power is cheaper and more
efficient than solar cells.

Somewhat more seriously, I've been reading about nantennas for solar
power. With 85% theoretical efficiency, it sure looks promising.
http://en.wikipedia.org/wiki/Nantenna
http://www.inl.gov/pdfs/nantenna.pdf
Maybe there's a place for RF engineers in alternative energy. All I
need to do is build a 3,000GHz antenna farm and find a diode that
works at that frequency.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

On Thu, 31 May 2012 17:21:22 +0200, "Szczepan Bialek"
wrote:

But I hope that you understand that 19th century physics and 21st century
are the same.
In the 20th the all was a top secret.

It wasn't called physics back then. It was "natural philosophy".
http://en.wikipedia.org/wiki/Natural_philosophy

Back then, to give one a "physic" was to administer a cathartic and
force regurgitation:
http://en.wiktionary.org/wiki/physic
That's fairly close to what I feel when reading your claims and
distortions.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

Szczepan Bialek wrote:

Do you think that in air no field electron emission?
S*

You don't have the slightest clue what the term "field electron emission"
means and keep using it in the most inappropriate of situations.

Szczepan Bialek wrote:

"Ian" napisa? w wiadomo?ci
...
"Szczepan Bialek" wrote in message
...
All fundamentals were invented in XIX by Faraday, Stokes, Lorenz and
Tesla.

Galileo, Copernicus, Ptolemy. All known that the planets orbit the Sun.
But the teaching program "said" the "the Sun orbits the Earth."
S*
Nothing invented in the 20th century? Nuclear weapons, the Internet,
String
Theory?

Fundamentals of radio.

Ptolemy chose the earth centric model.

Today astronomers do the same. The Sun is too hot to make the measurements
from it.

Copernicus disproved it and developed the sun centric model. Galileo was
somewhat unpopular with the church for supporting the earth centric model.

Copernicus and Galileo were trying to change the teaching program.

The same is now.
It is time to replace the EM by Heaviside with Ampere electrodynamics.
S*

100% pure, incoherent, babble of an ignorant idiot.

Szczepan Bialek wrote:

"Sal M. O'Nella" napisa? w wiadomo?ci
...

"Rob" wrote in message
...
Ian wrote:
"John" wrote in message
. au...
Its why you should never leave a powerpoint switched on. You end up
with a
heap of electrons on the floor.
And a hole under the neutral hole.

Not if you leave a plug in the socket. That'll stop the electrons.
What about the neutrons, protons and croutons?

Croutons are especially nasty when they end up on the floor...

The commercial power in my neighborhood has an asymmetric waveform. Some
of us have been saving the extra electrons on one-half-cycle.

The extra electrons flow into the ground. Like in your radios.
S*

There can't actually be a real person this blazingly, blindingly stupid.

Someone this stupid would be incapable of feeding and clothing himself.

"Szczepan Bialek" wrote in message
...

Ptolemy chose the earth centric model.

Today astronomers do the same. The Sun is too hot to make the measurements
from it.

Oh dear - no. Astronomers to-day know that the earth orbits around the sun.
It is incorrect to say that "the sun is too hot to make the measurements".
Scientists make plenty of observations of the sun (sunspots, CME and so on).

Regards, Ian.

"Jeff Liebermann" napisal w wiadomosci
...

Somewhat more seriously, I've been reading about nantennas for solar
power. With 85% theoretical efficiency, it sure looks promising.
http://en.wikipedia.org/wiki/Nantenna
http://www.inl.gov/pdfs/nantenna.pdf
Maybe there's a place for RF engineers in alternative energy. All I
need to do is build a 3,000GHz antenna farm and find a diode that
works at that frequency.

The principle of nantenas is the same as the crystal radio.
The size of the antenna must be below 1/2 WL.

For RF each diode is O.K.

The question is if the electrons flow into the ground.

Do you know the answer?
S*

"Jeff" napisal w wiadomosci
...


But is the another phenomenon. The Luxembourg effect.
The dipole radiate the doubled frequency.
S*

That is NOT the Luxembourg Effect. The Luxembourg effect is/was cross
modulation of 2 stations due to non-linearities in the atmosphere.

It is an explanation.
The Luxembourg effect WAS the receiving of LW from Luxembourg mast on the MW
receivers tuned to the doubled frequency..
S*

U¿ytkownik "Ian" napisa³ w wiadomo¶ci
...
"Szczepan Bialek" wrote in message
...

Ptolemy chose the earth centric model.

Today astronomers do the same. The Sun is too hot to make the
measurements from it.

Oh dear - no. Astronomers to-day know that the earth orbits around the
sun.
It is incorrect to say that "the sun is too hot to make the measurements".
Scientists make plenty of observations of the sun (sunspots, CME and so
on).

All measurements were, are, and will be done from the Earth.

"Ptolemy chose the earth centric model" means that all measurements must be
done from the Earth.
All astronomers before Ptolemy (and he) known that the planets orbit the
Sun.
S*