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#41
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![]() "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
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![]() "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
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![]() 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
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![]() "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
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![]() "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
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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
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"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
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![]() Quote:
If he removed the power supply - it would still work on battery power. |
#49
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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
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![]() "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. |
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