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#1
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![]() "Reg Edwards" wrote Reflections are functions of TIME, not frequency. Oliver Heaviside had the right idea long before the invention of the SWR meter. ==================================== For "reflections" also read "Echos". ----- Reg, G4FGQ. ==================================== |
#2
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On Wed, 23 Aug 2006 00:54:51 +0100, "Reg Edwards"
wrote: "Reg Edwards" wrote Reflections are functions of TIME, not frequency. Oliver Heaviside had the right idea long before the invention of the SWR meter. ==================================== For "reflections" also read "Echos". Hi Reggie, You are in fact wrong in all accounts. Reflections are functions of distance - as are echoes. This is a phase issue. Time and frequency are always inseparable as Kelvin would instruct you in first principles before another hunk of chalk was winged off your noggin. You may choose to render phase into time, but shift the frequency and the phase shifts, not the distance. Mismatched Zo connectors do not shrink or enlarge with frequency - the effects may, but physical components rarely follow such perturbations.... until an arc-over that is the classic failure mechanism for such mismatches (obviously, and deliberately ignored in this thread). 73's Richard Clark, KB7QHC |
#3
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Ric,
Yet again, like a Catherine Wheel, you are flying off in convoluted tangents. ----- Punchinello |
#4
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On Wed, 23 Aug 2006 02:10:41 +0100, "Reg Edwards"
wrote: Ric, Yet again, like a Catherine Wheel, you are flying off in convoluted tangents. How else to follow your logic? As you can see, facile diversions are easily managed in kind. ;-) If you cannot reconcile distance to reflection, what use is it being preserved in unzipped code? I await your next turn on the highway to avoid this road-kill. To cut the thread short, I recall one of your bedtime fairy tales of how you fought a radar fire aboard an airplane. Cut it anyway you want, but the fire undoubtedly arose from a mismatch. This appears to have marked a trauma in your youth to avoid the discussion of mismatch consequences. Please, in the future, begin your posts with "Once upon a time..." instead of At risk of being called a Troll, You must agree, this particular bait was self-fulfilling; and as always, I am most pleased to serve your bidding. 73's Richard Clark, KB7QHC |
#5
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"Reg Edwards" wrote
Reflections are functions of TIME, not frequency. Oliver Heaviside had the right idea long before the invention of the SWR meter. ==================================== For "reflections" also read "Echos". ==================================== The reason there are so many misunderstandings about SWR is that SWR meters are based on impedance and frequency. Not a simple concept. Whereas reflections (echos) (which according to Cecil are what it's all about) are functions of time and distance. With which we are very familiar. Unfortunately, there does not appear to be a simple measuring instrument which could replace the SWR meter. Any ideas? But we would still need an instrument, a TLI, which indicates whether or not the transmitter is correctly loaded with 50 ohms. So perhaps things are best kept as they are. Just rename the SWR meter! ----- Reg, G4FGQ. ==================================== |
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