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#1
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Szczepan Bialek wrote:
A loop antena have the antinodes. The points at which electrons could "fly off". Yet they do not. See Fig. 2: http://www.antiquewireless.org/otb/lodge1102.htm Why? A lot more has been learned since 1887. snip Can you measure the static electricity? Sure, with a static meter. Yet another device that didn't exist in 1887. You will transmit just fine if you have the ground/chassis/counterpoise. It depends on the type of antenna. If it is a dipole, yagi, log-periodic, sturba curtain, rhombic, parabolic, helix, loop, cubical quad, on any of many, many more types of antennas that have no place or need to connect a ground, it would not. |
#2
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![]() napisa³ w wiadomo¶ci ... Szczepan Bialek wrote: A loop antena have the antinodes. The points at which electrons could "fly off". Yet they do not. See Fig. 2: http://www.antiquewireless.org/otb/lodge1102.htm Why? A lot more has been learned since 1887. snip Can you measure the static electricity? Sure, with a static meter. Yet another device that didn't exist in 1887. You will transmit just fine if you have the ground/chassis/counterpoise. It depends on the type of antenna. If it is a dipole, yagi, log-periodic, sturba curtain, rhombic, parabolic, helix, loop, cubical quad, on any of many, many more types of antennas that have no place or need to connect a ground, it would not. Each of them has the chassis. S* |
#3
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Szczepan Bialek wrote:
napisa³ w wiadomo¶ci ... Szczepan Bialek wrote: A loop antena have the antinodes. The points at which electrons could "fly off". Yet they do not. See Fig. 2: http://www.antiquewireless.org/otb/lodge1102.htm Why? A lot more has been learned since 1887. snip Can you measure the static electricity? Sure, with a static meter. Yet another device that didn't exist in 1887. You will transmit just fine if you have the ground/chassis/counterpoise. It depends on the type of antenna. If it is a dipole, yagi, log-periodic, sturba curtain, rhombic, parabolic, helix, loop, cubical quad, on any of many, many more types of antennas that have no place or need to connect a ground, it would not. Each of them has the chassis. S* So your claim is that it is sufficient to "have the chassis" and that this chassis does not have to be connected to the earth? What constitutes "the chassis"? Do you have any minimum size for the chassis to be a chassis? |
#4
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![]() "Rob" napisa³ w wiadomo¶ci ... Szczepan Bialek wrote: napisa3 w wiadomo?ci ... If it is a dipole, yagi, log-periodic, sturba curtain, rhombic, parabolic, helix, loop, cubical quad, on any of many, many more types of antennas that have no place or need to connect a ground, it would not. Each of them has the chassis. S* So your claim is that it is sufficient to "have the chassis" and that this chassis does not have to be connected to the earth? What constitutes "the chassis"? Do you have any minimum size for the chassis to be a chassis? See the new topic "Ground". S* |
#5
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Szczepan Bialek wrote:
"Rob" napisa³ w wiadomo¶ci ... Szczepan Bialek wrote: napisa3 w wiadomo?ci ... If it is a dipole, yagi, log-periodic, sturba curtain, rhombic, parabolic, helix, loop, cubical quad, on any of many, many more types of antennas that have no place or need to connect a ground, it would not. Each of them has the chassis. S* So your claim is that it is sufficient to "have the chassis" and that this chassis does not have to be connected to the earth? What constitutes "the chassis"? Do you have any minimum size for the chassis to be a chassis? See the new topic "Ground". S* No I won't. Please stick to the topic and don't run away when you are caught with a mistake. |
#6
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![]() "Rob" napisa³ w wiadomo¶ci ... Szczepan Bialek wrote: "Rob" napisa3 w wiadomo?ci ... Szczepan Bialek wrote: napisa3 w wiadomo?ci ... If it is a dipole, yagi, log-periodic, sturba curtain, rhombic, parabolic, helix, loop, cubical quad, on any of many, many more types of antennas that have no place or need to connect a ground, it would not. Each of them has the chassis. S* So your claim is that it is sufficient to "have the chassis" and that this chassis does not have to be connected to the earth? What constitutes "the chassis"? Do you have any minimum size for the chassis to be a chassis? See the new topic "Ground". S* No I won't. Please stick to the topic and don't run away when you are caught with a mistake. Here you a "". In electronic 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. Where a real ground connection has a significant resistance, the approximation of zero potential is no longer valid. Stray voltages or earth potential rise effects will occur, which may create noise in signals or if large enough will produce an electric shock hazard. The use of the term ground (or earth) is so common in electrical and electronics applications that circuits in portable electronic devices such as cell phones and media players as well as circuits in vehicles such as ships, aircraft, and spacecraft may be spoken of as having a "ground" connection without any actual connection to the Earth. This is usually a large conductor attached to one side of the power supply (such as the "ground plane" on a printed circuit board) which serves as the common return path for current from many different components in the circuit." From: http://en.wikipedia.org/wiki/Ground_(electricity) There is wrote that all of your transmitter have "a "ground" connection without any actual connection to the Earth." Each transmitter needs " an infinite source or sink for charge". The above you know. But some of you do not know that where the voltage is there is the field electron emission. So the sink is necessary. It must not be infinite. "a large conductor" absorb the electrons from the air. So its size must be adequate to the emission. Nice Fun. S* |
#7
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Szczepan Bialek wrote:
"Rob" napisa³ w wiadomo¶ci ... Szczepan Bialek wrote: "Rob" napisa3 w wiadomo?ci ... Szczepan Bialek wrote: napisa3 w wiadomo?ci ... If it is a dipole, yagi, log-periodic, sturba curtain, rhombic, parabolic, helix, loop, cubical quad, on any of many, many more types of antennas that have no place or need to connect a ground, it would not. Each of them has the chassis. S* So your claim is that it is sufficient to "have the chassis" and that this chassis does not have to be connected to the earth? What constitutes "the chassis"? Do you have any minimum size for the chassis to be a chassis? See the new topic "Ground". S* No I won't. Please stick to the topic and don't run away when you are caught with a mistake. Here you a "". In electronic 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. Where a real ground connection has a significant resistance, the approximation of zero potential is no longer valid. Stray voltages or earth potential rise effects will occur, which may create noise in signals or if large enough will produce an electric shock hazard. The use of the term ground (or earth) is so common in electrical and electronics applications that circuits in portable electronic devices such as cell phones and media players as well as circuits in vehicles such as ships, aircraft, and spacecraft may be spoken of as having a "ground" connection without any actual connection to the Earth. This is usually a large conductor attached to one side of the power supply (such as the "ground plane" on a printed circuit board) which serves as the common return path for current from many different components in the circuit." From: http://en.wikipedia.org/wiki/Ground_(electricity) There is wrote that all of your transmitter have "a "ground" connection without any actual connection to the Earth." Each transmitter needs " an infinite source or sink for charge". The above you know. I know that it is not true. A transmitter needs no infinite source or sink for charge because it does not generate any DC current into the antenna. But some of you do not know that where the voltage is there is the field electron emission. So the sink is necessary. It must not be infinite. "a large conductor" absorb the electrons from the air. So its size must be adequate to the emission. Nice Fun. S* Ok so we can finally rest the case and agree that a connection to earth is not required for a transmitter, something you have claimed all the time because Marconi wrote it. |
#8
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"Szczepan Bialek" wrote in message
.. . Here you a "". In electronic 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. Where a real ground connection has a significant resistance, the approximation of zero potential is no longer valid. Stray voltages or earth potential rise effects will occur, which may create noise in signals or if large enough will produce an electric shock hazard. The use of the term ground (or earth) is so common in electrical and electronics applications that circuits in portable electronic devices such as cell phones and media players as well as circuits in vehicles such as ships, aircraft, and spacecraft may be spoken of as having a "ground" connection without any actual connection to the Earth. This is usually a large conductor attached to one side of the power supply (such as the "ground plane" on a printed circuit board) which serves as the common return path for current from many different components in the circuit." From: http://en.wikipedia.org/wiki/Ground_(electricity) S* Hello again folks. {I am concerned about Szczepan. He's cut-and-pasting from Wikipedia. Is he safe with a sharp pair of scissors?} I'm not sure whether to suggest that he also look at "chassis" and "common point". More seriously, I guess this is an example of a common word, "ground", having more than one technical meaning and this bringing confusion to the lay person. I really wish that Szczepan would get hold of a training manual for the amateur radio licence exams. The usual diagrams would enlighten him. Kindest regards from a wet UK, Ian. |
#9
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Szczepan Bialek wrote:
There is wrote that all of your transmitter have "a "ground" connection without any actual connection to the Earth." Nope, you just don't understand what is meant. Each transmitter needs " an infinite source or sink for charge". Nope. The above you know. But some of you do not know that where the voltage is there is the field electron emission. So the sink is necessary. Meaningless babble. It must not be infinite. "a large conductor" absorb the electrons from the air. So its size must be adequate to the emission. More meaningless babble. Antennas do not have a chassis. In the days of wired electronics, the chassis was the metal box the equipment was built in and used as a common return, i.e. what is called ground but has no relationship to the Earth. By convention it was mearly the common connection point for the most negative voltage. In todays world of circuit boards, there is often no chassis. Most portable equipment these days is a circuit board in a plastic box. No chassis. No ground, as in to the Earth, connection. |
#10
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"Szczepan Bialek" wrote in message
... If it is a dipole, yagi, log-periodic, sturba curtain, rhombic, parabolic, helix, loop, cubical quad, on any of many, many more types of antennas that have no place or need to connect a ground, it would not. Each of them has the chassis. S* Good afternoon ladies and gentlemen. Do any of you teach students hoping to gain an amateur radio licence? Some of Szczepan's postings would be useful for amusing those students and informing them how it is definitely not done. Hope you all have a fine Wednesday, Ian. |
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