Pseudo experts of fractional wavelength antennas.
Where does the current flow when it reaches the END of a fractional
length?
verticle antenna and why?
How does this relate to the term "end effect"?
If you have already written a book then tell us what the auther said.
Art KB9MZ.....XG

On Thu, 18 Oct 2007 17:04:26 -0700, art wrote:

Where does the current flow when it reaches the END of a fractional
length?

Does this question anticipate your introduction of a PaleoGaussic
theory of any single electron flowing from end-to-end (of any antenna)
in the time it takes to resonate?

Hint: Even an English Major knows Electrons at 160M would barely
wiggle an µM away from the feedpoint before they turned around and
went back on the next half of the first cycle - etc.

73's
Richard Clark, KB7QHC

"art" wrote in message
oups.com...
Pseudo experts of fractional wavelength antennas.
Where does the current flow when it reaches the END of a fractional
length?
verticle antenna and why?
How does this relate to the term "end effect"?
If you have already written a book then tell us what the auther said.
Art KB9MZ.....XG


it turns around and goes right back down the way it came.

On 19 Oct, 03:55, "Dave" wrote:
"art" wrote in message

oups.com...

Pseudo experts of fractional wavelength antennas.
Where does the current flow when it reaches the END of a fractional
length?
verticle antenna and why?
How does this relate to the term "end effect"?
If you have already written a book then tell us what the auther said.
Art KB9MZ.....XG

it turns around and goes right back down the way it came.

So a electrical generater doesn't keep turning in one direction
but instead it occillates at the desired frequency.
I have never seen one do that!
And "end effect" is the confusion created at the top of the radiator

"art" wrote in message
ps.com...
On 19 Oct, 03:55, "Dave" wrote:
"art" wrote in message

oups.com...

Pseudo experts of fractional wavelength antennas.
Where does the current flow when it reaches the END of a fractional
length?
verticle antenna and why?
How does this relate to the term "end effect"?
If you have already written a book then tell us what the auther said.
Art KB9MZ.....XG

it turns around and goes right back down the way it came.

So a electrical generater doesn't keep turning in one direction
but instead it occillates at the desired frequency.
I have never seen one do that!
And "end effect" is the confusion created at the top of the radiator


'end effect' is an effect of the capacitance seen from the end of the
antenna to ground or the other part of a dipole.

how does a generator come into this? you feed current into a wire with an
open end, it gets to the end, reverses direction and goes back to where it
started. no frequency was stated or implied all you asked was where there
'current' went... that could be any kind of current including a step or
pulse or sinusoids of any frequency.

On 19 Oct, 06:45, "Dave" wrote:
"art" wrote in message

ps.com...





On 19 Oct, 03:55, "Dave" wrote:
"art" wrote in message

groups.com...

Pseudo experts of fractional wavelength antennas.
Where does the current flow when it reaches the END of a fractional
length?
verticle antenna and why?
How does this relate to the term "end effect"?
If you have already written a book then tell us what the auther said.
Art KB9MZ.....XG

it turns around and goes right back down the way it came.

So a electrical generater doesn't keep turning in one direction
but instead it occillates at the desired frequency.
I have never seen one do that!
And "end effect" is the confusion created at the top of the radiator

'end effect' is an effect of the capacitance seen from the end of the
antenna to ground or the other part of a dipole.

how does a generator come into this? you feed current into a wire with an
open end, it gets to the end, reverses direction and goes back to where it
started. no frequency was stated or implied all you asked was where there
'current' went... that could be any kind of current including a step or
pulse or sinusoids of any frequency.- Hide quoted text -

- Show quoted text -

The current comes from a generator does it not? So how is that current
produced?
I see a generator turning in one direction only all the time where you
are suggesting that it is occillating.
Pretty hard to draw a circuit if it tracks back the way it came.
Draw a graph of an occillating current as you would see on a scope
that shows two degrees of freedom.
Does the "x" direction stop after a half cycle?

"art" wrote in message
oups.com...
On 19 Oct, 06:45, "Dave" wrote:
"art" wrote in message

ps.com...





On 19 Oct, 03:55, "Dave" wrote:
"art" wrote in message

groups.com...

Pseudo experts of fractional wavelength antennas.
Where does the current flow when it reaches the END of a fractional
length?
verticle antenna and why?
How does this relate to the term "end effect"?
If you have already written a book then tell us what the auther
said.
Art KB9MZ.....XG

it turns around and goes right back down the way it came.

So a electrical generater doesn't keep turning in one direction
but instead it occillates at the desired frequency.
I have never seen one do that!
And "end effect" is the confusion created at the top of the radiator

'end effect' is an effect of the capacitance seen from the end of the
antenna to ground or the other part of a dipole.

how does a generator come into this? you feed current into a wire with
an
open end, it gets to the end, reverses direction and goes back to where
it
started. no frequency was stated or implied all you asked was where
there
'current' went... that could be any kind of current including a step or
pulse or sinusoids of any frequency.- Hide quoted text -

- Show quoted text -

The current comes from a generator does it not? So how is that current
produced?
I see a generator turning in one direction only all the time where you
are suggesting that it is occillating.
Pretty hard to draw a circuit if it tracks back the way it came.
Draw a graph of an occillating current as you would see on a scope
that shows two degrees of freedom.
Does the "x" direction stop after a half cycle?

i don't need a generator to create a current. hook a battery to a piece of
wire, watch the current travel to the end of the wire then reflect back.
its easy to do the measurements and they match exactly the theory. i use
this all the time, its called a time domain reflectometer. very handy for
finding breaks or bad spots in feed lines or Beverage antennas. use one for
a while and you will become much more familiar with the true effect of
currents on wires and reflections.

"art" wrote
And "end effect" is the confusion created
at the top of the radiator
____________

Those wanting a more accurate description can find it here...

http://books.google.com/books?id=U-3...n8RnFgaJ57mgyo

RF

Art wrote:
"And "end effect" is the confusion created at the top of the radiator."

When the signal arrives at the open circuit end of the antenna, current
can not continue its forward flow. It abruptly stops, no longer
producing a magnetic field.

Energy from the magnetic field is converted to energy in the electric
field for an instant (Cecil`s famous conservation of energy). This
produces an insreased voltage at the open circuit end. This incresed
voltage has more capacitive effect, akin to the "Miller effect" caused
by the higher signal voltage on the plate of an amplifier vacuum tube
than on its grid.

On a transmission line or on an antenna system, we used to call this
capacitive action the "Ferranti effect"

Best regards, Richard Harrison, KB5WZI

On 19 Oct, 09:04, (Richard Harrison) wrote:
Art wrote:

"And "end effect" is the confusion created at the top of the radiator."
I was carrying on the train of thought of the poster, I have made it
quite clear what my thoughts are.

When the signal arrives at the open circuit end of the antenna, current
can not continue its forward flow. It abruptly stops, no longer
producing a magnetic field.

Who says so? I suspect that in the recognition of a measurement
problem
you theorised what might have , could have etc to match your faulty
logic.


..


Energy from the magnetic field is converted to energy in the electric
field for an instant (Cecil`s famous conservation of energy). This
produces an insreased voltage at the open circuit end. This incresed
voltage has more capacitive effect, akin to the "Miller effect" caused
by the higher signal voltage on the plate of an amplifier vacuum tube
than on its grid.

All this is faulty logic manufactured to suit your intelligence.
Radiation is a function of the release of energy from capacitance and
inductance
during a cycle i.e. a parallel circuit called a "tank circuit: which
can also
be seen as a loss less system ala a pendulum.
This goes back to what I say about books. Anybody can write one. It is
up
to the reader to follow the dots of logic displayed to determine
agreement
not to swallow it and memorise it.





On a transmission line or on an antenna system, we used to call this
capacitive action the "Ferranti effect"

Best regards, Richard Harrison, KB5WZI