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On Fri, 03 Oct 2003 13:49:15 -0500, Cecil Moore
wrote: A source mismatch affects the power available from the source. The SWR does not depend upon the power available from the source. The SWR is the same whether the source is 1% efficient or 99% efficient. Efficiency depends upon Zs. SWR does not. Hi Cecil, So, a source exhibiting 200 Ohms Resistive feeding a 50 Ohm line that is then terminated in a load of 200 Ohms Resistive exhibits what SWR? The absence of a numeric answer is par for the course here. The answer, of course, can be found in Chipman's text but that requires the act of reading, not snipping (which would still be available to the literate). Many here stumble when it comes to measuring SWR employing (in this case) 2 resistors and a hank of line - how they could imagine they respond faithfully to more elaborate enquiries is quite amusing, especially when they argue the Source Z has nothing to do with it. My mental image of that assemblage of pundits is that of them crowded on a small desert isle, each proclaiming it to be a vast, lush continent. Another SWR Don added to that bunch will teeter someone into the brine. ;-) Do any of you know how to tread water? Seems to be the perfect Darwinian thinning mechanism; but in fact most already tread water at high tide. 73's Richard Clark, KB7QHC |
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