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## Re: [TowerTalk] tuners and power rating

 To: Re: [TowerTalk] tuners and power rating "Paul Christensen" Wed, 1 Dec 2010 08:44:42 -0500 mailto:towertalk@contesting.com>
 ```> I think calling this situation "mismatch gain" would be > confusing as heck to some people, but if we insist on calculating the > "additional loss due to line mismatch," this is exactly what happens. I see no issues keeping it like it is. It's an anomaly with short wavelength sections of line. More than anything, I think it helps as a learning tool. You can take all the printed reference materials on transmission lines and combined, they are no substitute for playing "what if" analysis with a transmission line calculator. The additional loss attributed to a mismatch is still relevant once SWR becomes part of the loss. In the 10 ft. examples we've been using, that occurs when the line get to roughly 40 degrees in length. When we approach 1/4 wave, loss due to SWR becomes equal in loss to I-squared-R loss. I think that's was one of Steve's points in that the additional loss attributed to SWR needs some clarification in the footnotes o be completely accurate. Paul, W9AC _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk ```
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