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Before it came down my 20 meter antenna had a SWR approaching 20:1 and I was
running a Collins 30S-1 and no tuner!. I did that for several years and would be still doing if the roofers hadn't destroyed ~130 ft. dipole. One of these days after my back improves I'll put another one up. -- 73 Hank WD5JFR "Richard Clark" wrote in message ... On Tue, 25 May 2004 13:50:09 GMT, "Henry Kolesnik" wrote: Richard This is in response to your answer of last night. Before going to bed I got out the book REFLECTIONS II by Walt Maxwell W2DU. I'm typing verbatim from Very familiar stuff which I have held Walt accountable for. We have had considerable correspondence to this point and he is holding my argument in suspension, pending his bench work confirmation of my simple experiments that I have posted here to this effect. I'm guessing it's a virtual short because the pi-network is resonant but what happens if it is a bit off. Also what happens in a transistor final with no pi? What you describe is consistent with Walt's language, you deserve points for following his logic. As for your question about the transistor final with no pi network. That was handled quite explicitly by me for the thread "Loop Antenna for Class-E amplifier" in correspondence with Toni, ea3fya and Marc Battyani. If you will note, this thread was entirely devoid of ego so puffed up in these issues, and we had the rare opportunity of a third, independent observer who also sat at the bench and followed the instructions and comments I offered with actual construction and testing to POSITIVE results. You may also note the absolute vacuum of other's comments imploring that his data was chimerical, illusions of a meter. In fact it was one of those rare threads with a question much like yours, with the same simple observations offered by me, confirmed and ending in very much less than 600 postings of supposition and superstition. However, back to Walt's treatise and your reading of it. I again simply ask: "Do you have a tuner in line each day you fire up your rig? Why, if you have faith in your logic, do you need it?" As I've pointed out, there's the recent thread, and any number of simple tests and experiments that I have offered here. These etudés are typically ignored in favor of vacuous theory-spinning - NONE of which answer the simple question: "What is the Source Z if it is not 50 Ohms?" 73's Richard Clark, KB7QHC |
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