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On Sat, 8 Dec 2007 22:58:42 -0500, "AI4QJ" wrote:
Remember, the system was *measured* to be 1/4W so the reflections must cause a short every 125 nsec, no matter what is happening in between. Hi Dan, Keith was quite specific to separate the transient state from the steady state such that a short is not available "every 125 nS." Most 125 nS, perhaps, but not initially and so not "every 125 nS." Trivial distinction on the face of it, perhaps. When paired up with an absolute statement that has been "proven" to be universally true, then trivial is enough to sink the Titanic. The smith chart and phaser diagrams should work and are equivalent to using math. There are two solutions: transient and steady states; there are two maths. Cecil, in the same breath, manages to jump from one to the other enough that you should be acquainted with both by now - or you will be when you suddenly find yourself facing a paradox: Like why is the band that is playing "Nearer, My God, to Thee" is at such an odd sloping angle on the boat deck? Fortunately it takes only a little effort to follow one line, and to drill down to an absurdity. His proving Tom's delay was no better than his own measurement demonstrated this easily. The drilling down was in simply noting the particulars and skipping all the fluff of trivial sidebars. Most folks find the fluff attractive and chase it to no conclusion instead (that is how this thread accumulated 600 postings). Keith, on the other hand, has the discipline to simply stick to one issue, and drill down. Patience brings rewards in the end. 73's Richard Clark, KB7QHC |
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