"John" napisa³ w wiadomo¶ci
. au...
Whilst trying to source a "digital" TV antenna I came across some with all
external surfaces plastic. One was a small yagi with all external surfaces
plastic, hopefully with metal elements embedded. Another a "T" shape made
out of plastic conduit with elements inside conduit.
My question is how do they work?. If they are detecting electrical fields
how does increasing source impedance by 100,s of megohms improve things?.
Capacitive coupling, I suppose at the frequencies involved there would be
some.

Yes. The frequency do the work.

Rob wrote: "Apparently you have missed the interesting discussions with our
Polish
friend."

It was not the discussion. I only citate the Giants:
"In 1867 Lorenz wrote: " Ludvig Valentin Lorenz, "On the identity of the
vibrations of light with
electrical currents," Philosophical Magazine, Vol. 34, 1867, p. 287-301"

http://books.google.pl/books?id=caJd...page&q&f=false

On p. 301 he wrote:
"The present general opinion regards light as consisting of backward and
forward motions of particles of aether."
If this were the case the electrical current would be the progressive motion
of the aether in the direction of the electrical current."

In today's words: "Light is the oscillatory flow of electrons".

So no problem for electrons to flow through the plastic if it is matched to
the frequencies.
For example,You must use the different type of glass for different wave
length.

The ice is O.K. for the RF but the water not.

If it works as well as all metal why doesn,t every one use it and stop
corrosion?
Hope this is not too off topic.

It is too off the teaching programs.
S*

Szczepan Bialek wrote:


It was not the discussion. I only citate the Giants:

You only regurgitate very old writtings, many on which have been shown to
be either incomplete or outright incorrect in light of modern research.

This is usually followed by an out of context snippet from Wiki that is
totally misinterpreted.

Go babble your nonsense somewhere else.

On Mon, 28 May 2012 19:06:03 +0200, "Szczepan Bialek"
wrote:

Whilst trying to source a "digital" TV antenna I came across some with all
external surfaces plastic.

In today's words: "Light is the oscillatory flow of electrons".

So no problem for electrons to flow through the plastic if it is matched to
the frequencies.
For example,You must use the different type of glass for different wave
length.

The ice is O.K. for the RF but the water not.

I believe he said plastic, not glass or ice.

Is your theory that if you repeat the same garbage over and over,
eventually someone will believe it?

I might as well be part of the problem, instead of the solution.
Adding to your electron belching antenna theory, such antennas should
gain and lose mass as they transmit and receive electrons. If we have
(for example), an antenna with 1A of RF current, that's equal to 1
coulomb/second. 1 coulomb is:
6.24x10^18 electrons
which should be belching:
9.11*10^-29 g/electron * 6.25*10^18 coulombs/sec
= 5.69*10^-9 grams/sec
If your bogus theory is correct, you should be able to weigh your
antenna and see it loses some mass in transmit, and gains some in
receive.

Garbage in, Science out.

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

"Jeff Liebermann" napisal w wiadomosci
news
On Mon, 28 May 2012 19:06:03 +0200, "Szczepan Bialek"
wrote:

Whilst trying to source a "digital" TV antenna I came across some with
all
external surfaces plastic.

In today's words: "Light is the oscillatory flow of electrons".

So no problem for electrons to flow through the plastic if it is matched
to
the frequencies.
For example,You must use the different type of glass for different wave
length.

The ice is O.K. for the RF but the water not.

I believe he said plastic, not glass or ice.

Is your theory that if you repeat the same garbage over and over,
eventually someone will believe it?

I might as well be part of the problem, instead of the solution.
Adding to your electron belching antenna theory, such antennas should
gain and lose mass as they transmit and receive electrons. If we have
(for example), an antenna with 1A of RF current, that's equal to 1
coulomb/second. 1 coulomb is:
6.24x10^18 electrons
which should be belching:
9.11*10^-29 g/electron * 6.25*10^18 coulombs/sec
= 5.69*10^-9 grams/sec
If your bogus theory is correct, you should be able to weigh your
antenna and see it loses some mass in transmit, and gains some in
receive.

" Inelectronic circuit theory, a "ground" is usually idealized as an
infinite source or sink for charge, which can absorb an unlimited amount of
current without changing its potential. "

All antennas are grounded and you should be able to weigh the Earth because
it gain and lose mass as they transmit and receive electrons"
S*

Szczepan Bialek wrote:

" Inelectronic circuit theory, a "ground" is usually idealized as an
infinite source or sink for charge, which can absorb an unlimited amount of
current without changing its potential. "

The key phrase here is "usually idealized"; there are many examples of
systems that don't have anything that could even remotely be considered
a "ground".


All antennas are grounded

Totally false.

You are a babbling idiot.

On Tue, 29 May 2012 19:12:00 +0200, "Szczepan Bialek"
wrote:

" Inelectronic circuit theory, a "ground" is usually idealized as an
infinite source or sink for charge, which can absorb an unlimited amount of
current without changing its potential. "

What does this have to do with measuring the weight change in an
antenna that allegedly is transmitting electrons? Electrons have
mass. Transmit enough of them and you'll loose mass. Receive enough
electrons, and your mythical antenna should gain mass.

Also, if the earth is absorbing your electrons, something should be
gaining a rather large positive charge as a result of the
transmission. Where is the positive charge?

While we're at it, there are many ways to detect electrons. One of
them is with a phosophor screen, that will light up when hit by
electrons. Some how, waving my HT near the phosphor screen of my
oscilloscope fails to detect your alleged electrons. Could you
perhaps offer a better way to detect the electrons allegedly radiating
from an antenna?

All antennas are grounded and you should be able to weigh the Earth because
it gain and lose mass as they transmit and receive electrons"

I see. If I'm standing on the ground, I can't be weighed. Well, my
bathroom scale is sitting on the ground and works just fine measuring
my weight.

My HT antenna isn't grounded. Neither are any of the dipoles on my
roof. I presume you're suggesting that they don't work.

Now, that we have the requisite science fiction out of the way, could
I trouble you to answer my original question.
Is your theory that if you repeat the same garbage over and over,
eventually someone will believe it?

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

"Jeff Liebermann" napisal w wiadomosci
...
On Tue, 29 May 2012 19:12:00 +0200, "Szczepan Bialek"
wrote:

" Inelectronic circuit theory, a "ground" is usually idealized as an
infinite source or sink for charge, which can absorb an unlimited amount
of
current without changing its potential. "

What does this have to do with measuring the weight change in an
antenna that allegedly is transmitting electrons? Electrons have
mass. Transmit enough of them and you'll loose mass. Receive enough
electrons, and your mythical antenna should gain mass.

Radio transmitter is an electron pump.
But without the "infinite source or sink for charge" it do not work.

Also, if the earth is absorbing your electrons, something should be
gaining a rather large positive charge as a result of the
transmission. Where is the positive charge?

Without the "infinite source or sink for charge" a transmitter is gaining a
rather large positive charge.

While we're at it, there are many ways to detect electrons. One of
them is with a phosophor screen, that will light up when hit by
electrons. Some how, waving my HT near the phosphor screen of my
oscilloscope fails to detect your alleged electrons. Could you
perhaps offer a better way to detect the electrons allegedly radiating
from an antenna?

Tesla made the electron beam and next the X-rays.

All antennas are grounded and you should be able to weigh the Earth
because
it gain and lose mass as they transmit and receive electrons"

I see. If I'm standing on the ground, I can't be weighed. Well, my
bathroom scale is sitting on the ground and works just fine measuring
my weight.

My HT antenna isn't grounded. Neither are any of the dipoles on my
roof. I presume you're suggesting that they don't work.

They are connected to the mass (chassis).

Now, that we have the requisite science fiction out of the way, could
I trouble you to answer my original question.
Is your theory that if you repeat the same garbage over and over,
eventually someone will believe it?

It is theory of Faraday, Lorenz, Marconi, Tesla and Dirac.

Who is the authors of yours?
S*

With a Hand Held Radio - the person holding the transceiver is the ground plane. Because the human body is comprised mainly of water, it acts like the missing half of the antenna.
Radio waves in front of the person is radiated, radio waves behind the person is blocked to a small extent because of the water in the persons body.
This is the reason why Rabbit Ears antenna's do not work in concrete apartment buildings with people moving around the room.

The person who is walking around blocks some of the reception - especially in the higher frequency ranges because anything one or more wavelengths in size can and will block a signal.

I'm surprised that no one caugth the foopaugh that the origional answer giver had made when he described how a antenna works.

The reflector has to be a certain size for a certain wavelength and there is only one driven element.
The other elements - also known as directors - gathers the signal and directs them backwards in the array towards the reflector.
Each director gathers the same amount of signal as a dipole and each director adds gain to the antenna at the expense of beam width.

The only way to increase gain is to give up something somewhere else.

If you stack two antenna's one above the other - one wavelength apart - and build phasing lines, each antenna will only agument the other by a gain factor of 2.85 - reguardless of how much gain the origional antenna had.

If you stack two beam antenna's, one or more wavelengths apart - the apature becomes smaller - hence if you put enough of them together, it is as if you were trying to look through a straw while driving an automobile.

The beam width becomes very narrow, while increasing forward gain to the point of infany.

With a UHF signal - eventually when it runs out of things to bounce off of - it just travels in a straight line - out into space, never to be recovered again.

I think the OP was asking about receiving antenna's and not transmitting antenna's.

A receiving antenna - works best when it is cut to one individual frequency, but those antenna's tends to be more expensive, not less, because they have to be purpose built. The size and spacing has to be more exact to get the results the buyer is looking for.

While a VHF antenna, with the use of phasing lines, a person can make a very broadbanded antenna and it will still work up to the length of the longest combined element.
When the elements are too long, the antenna can look back through the array and can match the wavelength to the elements in the array...

"Szczepan Bialek" wrote in message
...


All antennas are grounded and you should be able to weigh the Earth
because it gain and lose mass as they transmit and receive electrons"
S*
It is incorrect to say that all aerials are grounded. Dipoles, quads and
yagis aren't grounded.

On 5/29/2012 5:32 PM, Ian wrote:
"Szczepan wrote in message
...


All antennas are grounded and you should be able to weigh the Earth
because it gain and lose mass as they transmit and receive electrons"
S*
It is incorrect to say that all aerials are grounded. Dipoles, quads and
yagis aren't grounded.



And neither are spacecraft antennas no matter what the type.

tom
K0TAR