Re: News from Visalia! (:-))
Posted by
Phil Salas on
Apr 17, 2010; 7:25pm
URL: http://elecraft.85.s1.nabble.com/News-from-Visalia-tp4918467p4918580.html
"... but If there isn't an ATU on board as I recall there
was with the earlier prototypes of the bigger Elecraft amps, I wish that
there were one with the KPA 500 and I'm disappointed..."
The SPE internal tuner (and even the THP external tuner) can only handle
about a 3:1 SWR. A wide-range autotuner needs a much greater range in
component values, as well as higher voltage-rated and higher current-rated
components than does a limited range tuner. Look inside a LDG-1000 or
MFJ-998 and you'll see what I mean. Adding a wide-range tuner capability
inside the KPA500 would add considerably to the size, cost and complexity of
the KPA500.
When it comes to an amplifier, I prefer an external wide-range tuner. Just
my opinion.
Phil - AD5X
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