Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #41   Report Post  
Old July 4th 12, 10:59 PM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: May 2012
Posts: 35
Default Dipole-2 different wire sizes?


"Ian" wrote in message
...
Not sure if the electrons would be packed in bottles (like water) or in
sacks (like coal).


I've said I keep my excess electons (from leakage) in old shoe boxes.
Szczepan said I should instead be using Leyden jars.

File under "NO HOPE."


  #42   Report Post  
Old July 4th 12, 11:02 PM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: May 2012
Posts: 35
Default Dipole-2 different wire sizes?


"Ian" wrote in message
...
"Szczepan Bialek" wrote in message
.. .

"Ian" napisa³ w wiadomo¶ci
...

Szczepan seems to have grasped electronics as being the movement of
electrons and has muddled that up with air or liquid flow.


In EM the electricity is like the LIQUID flow ( incompressible and
massles).
In electronics is GAS flow. Electron gas. Electrons have mass.

Do you see the difference between massive GAS and massles LIQUID?
S*

Szczepan, you say that liquids are massles (I assume that you means
massless). This is definitely wrong. Thanks for the laugh.
Regards, Ian.


Imagine what the price of gasoline/petrol would be if it had any mass. Oy!


  #43   Report Post  
Old July 4th 12, 11:06 PM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: May 2012
Posts: 35
Default Dipole-2 different wire sizes?


wrote in message
...
Szczepan Bialek wrote:

The antenna always has the counterpoise:


Where is the counterpoise for these antennna:

A full wave loop antenna

A slot antenna

A horn antenna

For the purposes of the discussion, each antenna is driven by a small,
modular oscillator that has no chassis or metalwork of any kind and is
located half way between the Milky Way and the Andromeda Galaxy, i.e. it
is about 1,250,000 million light years from anything.



.... which certainly explains the shipping delays that have been plaguing
eBay, lately.


  #44   Report Post  
Old July 4th 12, 11:09 PM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: May 2012
Posts: 35
Default Dipole-2 different wire sizes?


"Ian" wrote in message
..

snip

Wonder what would happen if he plugged his computer into a DC supply
rather than an AC supply?
73, Ian.


He's be a bother to the fire department, not us.


  #45   Report Post  
Old July 5th 12, 08:41 AM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: Oct 2009
Posts: 707
Default Dipole-2 different wire sizes?


"Rob" napisa³ w wiadomo¶ci
...
Szczepan Bialek wrote:
If it were true, an antenna
would be a nonlinear element that would cause intermodulation. As we
don't see that happen on a well-designed antenna (it *does* happen when
there are bad contacts with diode-effect in the antenna), we know that
an antenna by itself cannot be nonlinear and so there cannot be a net
flow of electrons.


The net flow of electrons is from the counterpoise to end of antenna.
S*


How do you explain that there is no intermodulation as a result of
the nonlinearity of the antenna that you claim?


I am here to learn.

Lately I have learn from Bilou:
"In such cases it is convenient to put the things to their limits.
Imagine the diameter of one half is infinite.
You now have a quarter wave over a ground plane.A well known case."

It means that a dipole fed from a coax is the monopole (a quarter wave) with
the counterpoise.

"In the case of very rocky or poorly conducting soil a counterpoise often is
substituted for a buried network of wires. A counterpoise is a network of
wires place above the earth a slight distance and insulated from it, so
arranged to produce a very high capacity to the earth."

So I know now why you all claim that a dipole do not need a ground.

The number of radials is the power dependent. More power radiated more
electrons must be taken from a ground.
Do you agree?
S*




  #46   Report Post  
Old July 5th 12, 08:50 AM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: Dec 2008
Posts: 375
Default Dipole-2 different wire sizes?

Szczepan Bialek wrote:

"Rob" napisa³ w wiadomo¶ci
...
Szczepan Bialek wrote:
If it were true, an antenna
would be a nonlinear element that would cause intermodulation. As we
don't see that happen on a well-designed antenna (it *does* happen when
there are bad contacts with diode-effect in the antenna), we know that
an antenna by itself cannot be nonlinear and so there cannot be a net
flow of electrons.

The net flow of electrons is from the counterpoise to end of antenna.
S*


How do you explain that there is no intermodulation as a result of
the nonlinearity of the antenna that you claim?


I am here to learn.


Please don't wander off the subject and answer the question!
You did not answer the question why there is no intermodulation
in a transmitter antenna, while you claim it is nonlinear.

Lately I have learn from Bilou:
"In such cases it is convenient to put the things to their limits.
Imagine the diameter of one half is infinite.
You now have a quarter wave over a ground plane.A well known case."

It means that a dipole fed from a coax is the monopole (a quarter wave) with
the counterpoise.

"In the case of very rocky or poorly conducting soil a counterpoise often is
substituted for a buried network of wires. A counterpoise is a network of
wires place above the earth a slight distance and insulated from it, so
arranged to produce a very high capacity to the earth."

So I know now why you all claim that a dipole do not need a ground.


Because a dipole does not need a ground, it is a symmetric antenna which
is not driven relative to ground.

The number of radials is the power dependent. More power radiated more
electrons must be taken from a ground.
Do you agree?
S*


No.
  #47   Report Post  
Old July 5th 12, 09:31 AM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: Apr 2012
Posts: 165
Default Dipole-2 different wire sizes?

"Szczepan Bialek" wrote in message
.. .

The number of radials is the power dependent. More power radiated more
electrons must be taken from a ground.
Do you agree?
S*

Good morning Szczepan.
Here are two questions for you to ponder:
How many radials are needed for a receiving aerial?
Are liquids massless?

Here is something to learn - the monopole and dipole are two different
aerials.

Regards, Ian.


  #48   Report Post  
Old July 5th 12, 04:05 PM
Senior Member
 
First recorded activity by RadioBanter: Jan 2011
Posts: 390
Default

The voltages inside of the computer is DC / not AC.

If he removed the power supply - it would still work on battery power.
  #49   Report Post  
Old July 5th 12, 05:13 PM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: Jun 2006
Posts: 1,898
Default Dipole-2 different wire sizes?

Szczepan Bialek wrote:

"Rob" napisa? w wiadomo?ci
...
Szczepan Bialek wrote:
If it were true, an antenna
would be a nonlinear element that would cause intermodulation. As we
don't see that happen on a well-designed antenna (it *does* happen when
there are bad contacts with diode-effect in the antenna), we know that
an antenna by itself cannot be nonlinear and so there cannot be a net
flow of electrons.

The net flow of electrons is from the counterpoise to end of antenna.
S*


How do you explain that there is no intermodulation as a result of
the nonlinearity of the antenna that you claim?


I am here to learn.


No, you are obviously not here to learn.

No matter what you are told from people who have actually been dealing
with antenna systems from years, your response continues to be babbling
nonsense and quotes from century old literature that has long ago proven
to be false.

Lately I have learn from Bilou:
"In such cases it is convenient to put the things to their limits.
Imagine the diameter of one half is infinite.
You now have a quarter wave over a ground plane.A well known case."


Babble.

It means that a dipole fed from a coax is the monopole (a quarter wave) with
the counterpoise.


No, it doesn not mean that.

"In the case of very rocky or poorly conducting soil a counterpoise often is
substituted for a buried network of wires. A counterpoise is a network of
wires place above the earth a slight distance and insulated from it, so
arranged to produce a very high capacity to the earth."


This is just a random factoid dealing with a particular situation for
a particular antenna type and NOT true in general.

So I know now why you all claim that a dipole do not need a ground.


No, you do not know anything.

A dipole does NOT need a ground.

The number of radials is the power dependent. More power radiated more
electrons must be taken from a ground.
Do you agree?


No, this is babbling nonsense.

Radials are only required for an end fed monopole.

The number of radial required is dependant on the ground conductivity and
totally independant of power.



  #50   Report Post  
Old July 5th 12, 05:39 PM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: Oct 2009
Posts: 707
Default Dipole-2 different wire sizes?


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

The number of radials is the power dependent. More power radiated more
electrons must be taken from a ground.
Do you agree?
S*

Good morning Szczepan.
Here are two questions for you to ponder:
How many radials are needed for a receiving aerial?


It is power dependent.

Are liquids massless?


Ask Heaviside.

Here is something to learn - the monopole and dipole are two different
aerials.


I did:
"The dipole antenna, which is the basis for most antenna designs, is a
balanced component, with equal but opposite voltages and currents applied at
its two terminals through a balanced transmission line (or to a coaxial
transmission line through a so-called balun)."

The dipole antenna is the two monopoles.

" The vertical antenna, on the other hand, is a monopole antenna. It is
typically connected to the inner conductor of a coaxial transmission line
(or a matching network); the shield of the transmission line is connected to
ground."

If the antenna has the two legs and the one leg is connected to the shield
of the coax we have the monopole.

"In this way, the ground (or any large conductive surface) plays the role of
the second conductor of a dipole, thereby forming a complete circuit.[3]
Since monopole antennas rely on a conductive ground, a so-called grounding
structure may be employed to provide a better ground contact to the earth or
which itself acts as a ground plane to perform that function regardless of
(or in absence of) an actual contact with the earth." From:
http://en.wikipedia.org/wiki/Antenna_(radio)

So: " It means that a dipole fed from a coax is the monopole (a quarter
wave) with the counterpoise." is right.
Do you agree?
S*




Regards, Ian.




Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Using speaker wire for a dipole KD2AIP Antenna 48 February 25th 19 08:46 PM
80m Dipole fed with open wire feeder. [email protected] Antenna 2 December 29th 08 08:54 PM
Newbie with a wire dipole killdagger CB 27 December 17th 04 10:36 PM
Receiver dipole vs 23 ft wire for HF Ken Antenna 2 April 30th 04 03:41 AM
Long wire vs. G5RV/dipole John Shortwave 10 March 5th 04 03:16 AM


All times are GMT +1. The time now is 07:50 AM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017