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On Fri, 25 Feb 2005 22:56:47 -0600, Cecil Moore
wrote: Ken Smith wrote: If you then put in the output device protection they didn't include, you end up with the matching as I explained elsewhere. SWR foldback is part of impedance matching? It is in the sense that it improves the source match by trying to hold the forward power constant regardless of load. Most SWR foldback systems overreact but a good ALC system, what we called a "leveling loop" in waveguide reflectometers back in the mid-20th century certainly improve the source match. |
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