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#13
June 24th 05, 11:42 PM
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Reg Edwards wrote:
"Reg Edwards" wrote in message ... VSWR isn't a REAL problem! Deal with it! VSWR is real and ENGINEERS and Ham Radio operators make transmission lines and antennas work; while Physicists wonder if it's real or uncertain. [My 80 meter antenna has a VSWR of 30:1. It works just fine!] ===================================== Anything will work after a fashion. It's no proof of anything. It is not realised by many amateurs and engineers that the so-called SWR meter does not measure SWR. It merely indicates whether or not the transmitter is loaded with its design resistance. Which, of course, is useful. The meter not located in the right place to measure SWR on the feedline. The feedline on which it is imagined SWR is measured does not exist. To measure SWR on any line a moving voltmeter is required. SWR is simply max volts divided by min volts which occur at a distance apart of 1/4-wavelength if the line is long enough, and requires no knowledge of line impedance or its terminating impedances, or of anything else about the line. In other words, SWR is just something for Old Wives and "clever" people to plagiarise and waffle about, on newsgroups and in the magazines, and so continue to mislead themselves together with the unfortunate learners, CB-ers, and the novices. ---- Reg, G4FGQ ================================ In other words, ENGINEERS make transmission lines and antennas work by copying what was done last time. Nothing has changed since Oliver Heaviside, 1875 - 1925. If anybody mentions G5RV I shall cry. ---- Reg, G4FGQ G5RV 73, Tom Donaly, KA6RUH |
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