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Richard KB7QHC writes:
I've visited your page, and in an effort to wean out the details (you don't go to much effort to offer an unadorned, plain, vanilla specification for the radiator). I had to guess about the coil length (judging from its only metric being 2.5" diameter) and inductance (you dismiss the importance of its Q and wholly leave this metric blank). Our major disagreement with W8JI was is the current accros antenna loading the same or is it appreciably different. I was just trying to argue that it is signifficantly different, W9UCW has done multitude of tests and measurements and supported my position. I had practical experience of knowing that bottom of uniform coils get hotter than middle or top, I fried heatshrink tubing at the bottom of the coils and this was good enough for my practical knowledge that current must by higher at the bottom. ON4UN book also supports that. The second step in our quest of properly mastering the phenomena is to investigate the relationships, magnitudes and have it properly accounted for in the modeling software. W9UCW provided some info, data and pictures, he has lot more and is willing to cooperate further, be it writing concise article (he is preparing material for the book also) or answer questions or provide more info. I told him about this NG, so he might show up. So if we are ready to bridge the idea that current is different and implement that in the software, lets roll. So far it appears that Roy still has a problem with understanding what is going on. Yuri |
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