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1. [Amps] 2M W6PO Amp Cavity Zo calculations (score: 1): Author: "Charlie" <charlie@drhabekost.com>; Date: Tue, 21 Nov 2017 18:36:54 -0800; Putting some parts together for a 2M amp. Like the W6PO design. Antennaworks has a nice write up of the design choices in their manual online: http://antennaworks.com/ I have 2 questions. 1) On page; /archives//html/Amps/2017-11/msg00179.html (7,010 bytes)
2. Re: [Amps] 2M W6PO Amp Cavity Zo calculations (score: 1): Author: Steve Thompson <g8gsq72@gmail.com>; Date: Wed, 22 Nov 2017 22:42:14 +0000; I think the formula you've used for impedance is for a circular coaxial line. In the amp, the metalwork forming the 'outer' is a rectangle, so much of it is spaced further away from the pipe meaning; /archives//html/Amps/2017-11/msg00184.html (8,496 bytes)

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