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#1
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On Oct 21, 3:09*am, "Szczepan Bialek" wrote:
1. Electron must flow from the antenna to the ground, Nope, RF electrons don't actually flow. They essentially vibrate in place. "For a copper wire of radius 1 mm carrying a steady current of 10 amps, the DC drift velocity is only about 0.24 nanometer per microsecond." At 10 MHz, the electrons would vibrate back and forth at about 0.01 nanometer per 0.1 microsecond. Consider how large 0.01 nanometer really is so for all practical purposes, electrons don't flow at all at HF frequencies. Electrons at HF are just a bucket brigade for the photons that deliver the RF energy to the diode detector. Unless a circuit is at DC steady-state, photons are involved, i.e. RF involves photons which constitute the RF fields and RF waves. -- 73, Cecil, w5dxp.com |
#2
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![]() "Cecil Moore" wrote ... On Oct 21, 3:09 am, "Szczepan Bialek" wrote: 1. Electron must flow from the antenna to the ground, Nope, RF electrons don't actually flow. They essentially vibrate in place. The same is with the all AC. If between the live line and the ground is the diode "Electron must flow from the line to the ground". "For a copper wire of radius 1 mm carrying a steady current of 10 amps, the DC drift velocity is only about 0.24 nanometer per microsecond." At 10 MHz, the electrons would vibrate back and forth at about 0.01 nanometer per 0.1 microsecond. Consider how large 0.01 nanometer really is so for all practical purposes, electrons don't flow at all at HF frequencies. Electrons at HF are just a bucket brigade for the photons that deliver the RF energy to the diode detector. Unless a circuit is at DC steady-state, photons are involved, i.e. RF involves photons which constitute the RF fields and RF waves. No matter how big the back and forth are. If is a diode electrons must flow in one direction. Do not be lazy and measure it. S* |
#3
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On Oct 21, 11:35*am, "Szczepan Bialek" wrote:
*"Cecil Moore" ... On Oct 21, 3:09 am, "Szczepan Bialek" wrote: 1. Electron must flow from the antenna to the ground, Nope, RF electrons don't actually flow. They essentially vibrate in place. The same is with the all AC. If between the live line and the ground is the diode "Electron must flow from the line to the ground". "For a copper wire of radius 1 mm carrying a steady current of 10 amps, the DC drift velocity is only about 0.24 nanometer per microsecond." At 10 MHz, the electrons would vibrate back and forth at about 0.01 nanometer per 0.1 microsecond. Consider how large 0.01 nanometer really is so for all practical purposes, electrons don't flow at all at HF frequencies. Electrons at HF are just a bucket brigade for the photons that deliver the RF energy to the diode detector. Unless a circuit is at DC steady-state, photons are involved, i.e. RF involves photons which constitute the RF fields and RF waves. No matter how big the back and forth are. If is a diode electrons must flow in one direction. Do not be lazy and measure it. S* I can not debate your particular area other than to point what I have in actuality. By removing all reactance especially the magnetic field the current flow removed itself from the material and travels on the surface. This is not unusual as superconductors drop to zero resistance when the magnetic field is canceled or removed. There are only two resistances in radiation and if no skin depth is then generated then the material and its resistance is removed from Maxwell's equations Now one can question my understanding as to what is happening but the fact is my antenna swr does not go above 3:1 no matter what band I am on! Yes, by not understanding what is really happening it would be easy to say "dummy load " but that is not the real answer. So I would ask all what exactly is impossible about the sequence of event that I describe while adding that computer programs confirm it? By the way the antenna is sitting om the grass as height does not affect dish antennas! |
#4
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On 10/21/2010 12:38 PM, Art Unwin wrote:
On Oct 21, 11:35 am, "Szczepan wrote: "Cecil ... On Oct 21, 3:09 am, "Szczepan wrote: 1. Electron must flow from the antenna to the ground, Nope, RF electrons don't actually flow. They essentially vibrate in place. The same is with the all AC. If between the live line and the ground is the diode "Electron must flow from the line to the ground". "For a copper wire of radius 1 mm carrying a steady current of 10 amps, the DC drift velocity is only about 0.24 nanometer per microsecond." At 10 MHz, the electrons would vibrate back and forth at about 0.01 nanometer per 0.1 microsecond. Consider how large 0.01 nanometer really is so for all practical purposes, electrons don't flow at all at HF frequencies. Electrons at HF are just a bucket brigade for the photons that deliver the RF energy to the diode detector. Unless a circuit is at DC steady-state, photons are involved, i.e. RF involves photons which constitute the RF fields and RF waves. No matter how big the back and forth are. If is a diode electrons must flow in one direction. Do not be lazy and measure it. S* I can not debate your particular area other than to point what I have in actuality. By removing all reactance especially the magnetic field the current flow removed itself from the material and travels on the surface. This is not unusual as superconductors drop to zero resistance when the magnetic field is canceled or removed. There are only two resistances in radiation and if no skin depth is then generated then the material and its resistance is removed from Maxwell's equations Now one can question my understanding as to what is happening but the fact is my antenna swr does not go above 3:1 no matter what band I am on! Yes, by not understanding what is really happening it would be easy to say "dummy load " but that is not the real answer. So I would ask all what exactly is impossible about the sequence of event that I describe while adding that computer programs confirm it? By the way the antenna is sitting om the grass as height does not affect dish antennas! Pick a band. Pick a time. Let's have a contact. I know what the answer will be of course, an excuse why you can't have a Q with me or anyone else. tom K0TAR |
#5
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On Oct 21, 12:38*pm, Art Unwin wrote:
Now one can question my understanding as to what is happening but the fact is my antenna swr does not go above 3:1 no matter what band I am on! Yes, by not understanding what is really happening it would be easy to say "dummy load " but that is not the real answer. What would you consider the answer to be? It's really an inefficient toaster oven? So I would ask all what exactly is impossible about the sequence of event that I describe while adding that computer programs confirm it? You want the Bush or the Obama explanation? Lets ask both.. Hey Gee Dub, what do you think? "Son, your misapplication of the modeling programs have led you astray. Number one, you can't polish a turd into a diamond. Believe me, I've already tried it out at the Crawford ranch. Didn't pan out... Number two, the modeling programs are not coded to deal with turd polishing. So any results obtained from misapplying an antenna modeling program to simulate the performance of a polished turd is bound to end in frustration and gross error." Hey Barry, what's your angle? "I think we should give him a $500.000.00 grant!" I guess it was a split decision.. :/ By the way the antenna is sitting om the grass as height does not affect dish antennas! Actually, it does make it easier for the dog to drink the rain water out of it. Good call! |
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