On Tuesday, July 24, 2012 9:44:24 AM UTC-5, Szczepan Bialek wrote:
But is in unnormal operation. When it (corona) is seen?

The quad beam antenna was invented by Clarence Moore to solve a corona problem encountered with a Yagi-type beam at 10k' in the Andes Mountains. Here is that interesting history:

http://lists.contesting.com/_towerta.../msg00393.html

The point is that electron flow corona destroyed the Yagi-type beam but there was negligible corona using the quad beam because the standing wave voltage maximums are much lower with the quad. Yet the two antennas radiated approximately the same magnitude of RF waves. This proves that electron flow is not the mechanism associated with RF radiation. It is simple to understand once one realizes that electron flow corona results in non-coherent radiation while normal photonic RF radiation is coherent.
--
73, Cecil, w5dxp.com

Szczepan Bialek wrote:

napisa? w wiadomo?ci
...
Szczepan Bialek wrote:


An antenna is a device that converts the AC electrical energy at it's
teminals into electromagnetic energy which radiates from the antenna
and also coverts the electromagnetic energy which antenna intercepts
into AC electrical energy at it's terminals.

Radiates waves or photons or something else?

As you have been told many times but are too stupid to understand,
electromagnetic radiation can be viewed as either waves or photons.

Why are you asking again, are you stupid, drunk, or insane?


A rectenna is simply an antenna with something that acts as a diode at
it's terminals to convert the AC to DC.

In AC electrons oscillate. In DC electrons are flowing for ages.
Where they come from?

No; in AC electrons periodically change directions and in DC electrons
flow in one direction only.

An antenna is a device that converts the AC electrical energy at it's
teminals into electromagnetic energy which radiates from the antenna
and also converts the electromagnetic energy which antenna intercepts
into AC electrical energy at it's terminals.

A diode converts AC into DC.

You are an ignorant, babbling, ineducable idiot who knows absolutely
NOTHING about anything.

Szczepan Bialek wrote:

napisa³ w wiadomo¶ci
...
Szczepan Bialek wrote:

They jump off from the end (corona) after the time equal to speed of
light.
They do not flow from the transmitter to the end of antenna. They kick
the
next ones. It is the oscillatory flow.

You have been told time and time again that there is no corona in normal
antenna operation.

But is in unnormal operation. When it is seen?

Only when you output kilowatts of power and there is some point in
the antenna where the voltage is very high.

But a radio amateur knows that it is possible to transmit signals with
arbitrarily low power and that the range becomes smaller but it still
works all the time. So even with very low voltages, where there is
no corona, a transmitter still transmits.

"Szczepan Bialek" wrote in message
.. .
Are all dipoles the monopoles?
S*

Good afternoon Szczepan.
Dipoles and monopoles are two different designs of aerial. A basic knowledge
of (I think) Latin would prove this to you.
You'd find these two types of aerial in basic/entry-level reference books
for ham
radio. Please use the links to the ARRL and RSGB book shops and get yourself
a decent book on the topic of
aerials.

Regards, Ian.

napisa³ w wiadomo¶ci
...
Szczepan Bialek wrote:


In AC electrons oscillate. In DC electrons are flowing for ages.
Where they come from?

No; in AC electrons periodically change directions and in DC electrons
flow in one direction only.

An antenna is a device that converts the electromagnetic energy which
antenna intercepts
into AC electrical energy at it's terminals.

A diode converts AC into DC.

The crystal radio antenna has only one terminal. Before the diode is AC.
After the diode is DC.
Where electrons come from?
S*

"Rob" napisa³ w wiadomo¶ci
...
Szczepan Bialek wrote:

napisa3 w wiadomo?ci
...
Szczepan Bialek wrote:

They jump off from the end (corona) after the time equal to speed of
light.
They do not flow from the transmitter to the end of antenna. They kick
the
next ones. It is the oscillatory flow.

You have been told time and time again that there is no corona in normal
antenna operation.

But is in unnormal operation. When it is seen?

Only when you output kilowatts of power and there is some point in
the antenna where the voltage is very high.

I was asking on the speed of electrons in the conductor.

But a radio amateur knows that it is possible to transmit signals with
arbitrarily low power and that the range becomes smaller but it still
works all the time. So even with very low voltages, where there is
no corona, a transmitter still transmits.

"Leakage current is also any current that flows when the ideal current is
zero".

Real current is not the ideal one.
S*

Szczepan Bialek wrote:

napisa³ w wiadomo¶ci
...
Szczepan Bialek wrote:


In AC electrons oscillate. In DC electrons are flowing for ages.
Where they come from?

No; in AC electrons periodically change directions and in DC electrons
flow in one direction only.

An antenna is a device that converts the electromagnetic energy which
antenna intercepts
into AC electrical energy at it's terminals.

A diode converts AC into DC.

The crystal radio antenna has only one terminal. Before the diode is AC.
After the diode is DC.
Where electrons come from?
S*

There should always be a DC path around the diode, or the crystal radio
will not work.

Normally there is a tuned circuit at the input, which consists of a
coil and capacitor in parallel. The DC flows through the coil.

At the output there either is a high-impedance magnetic headphone,
which conducts DC through its coil, or a crystal headphone with a
resistor in parallel for the DC path.

The electrons circulate around the DC path in the receiver.

Szczepan Bialek wrote:

"Rob" napisa³ w wiadomo¶ci
...
Szczepan Bialek wrote:

napisa3 w wiadomo?ci
...
Szczepan Bialek wrote:

They jump off from the end (corona) after the time equal to speed of
light.
They do not flow from the transmitter to the end of antenna. They kick
the
next ones. It is the oscillatory flow.

You have been told time and time again that there is no corona in normal
antenna operation.

But is in unnormal operation. When it is seen?

Only when you output kilowatts of power and there is some point in
the antenna where the voltage is very high.

I was asking on the speed of electrons in the conductor.

No you were telling that electrons were jumping off the antenna because
of corona, which is nonsense when the transmitter is low power, and
points to an operational problem when the transmitter is high power.

But a radio amateur knows that it is possible to transmit signals with
arbitrarily low power and that the range becomes smaller but it still
works all the time. So even with very low voltages, where there is
no corona, a transmitter still transmits.

"Leakage current is also any current that flows when the ideal current is
zero".

Real current is not the ideal one.

The average Pole may not be stupid, but that does not mean there don't
exist very stupid Poles.

"Rob" napisa³ w wiadomo¶ci
...
Szczepan Bialek wrote:

napisa3 w wiadomo?ci
...
Szczepan Bialek wrote:


In AC electrons oscillate. In DC electrons are flowing for ages.
Where they come from?

No; in AC electrons periodically change directions and in DC electrons
flow in one direction only.

An antenna is a device that converts the electromagnetic energy which
antenna intercepts
into AC electrical energy at it's terminals.

A diode converts AC into DC.

The crystal radio antenna has only one terminal. Before the diode is AC.
After the diode is DC.
Where electrons come from?
S*

There should always be a DC path around the diode, or the crystal radio
will not work.

Normally there is a tuned circuit at the input, which consists of a
coil and capacitor in parallel. The DC flows through the coil.

"The wire antennas used with crystal receivers are monopole antennas which
develop their output voltage with respect to ground. They require a return
circuit connected to ground (earth) so that the current from the antenna,
after passing through the receiver, can flow into the ground."

Unnormally you can have only the monopole antenna and the diode and ground.

What current is flowing between the diode and the ground?
Is it dependent on the distance from the transmitter?
S*

Szczepan Bialek wrote:
"The wire antennas used with crystal receivers are monopole antennas which
develop their output voltage with respect to ground. They require a return
circuit connected to ground (earth) so that the current from the antenna,
after passing through the receiver, can flow into the ground."

Unnormally you can have only the monopole antenna and the diode and ground.

What current is flowing between the diode and the ground?
Is it dependent on the distance from the transmitter?
S*

Dear Szczepan,

I have explained to you how it works. That explanation is correct.
Please stop adding incorrect information and asking stupid questions.

I know two stupid Poles. Are there more?