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.