In a message dated 9/24/2007 5:50:38 P.M. Eastern Daylight Time,
carlseye@verizon.net writes:
If you can make a 572B stable at 50 mhz,
then why can't it be stabilized at 30 mhz.?????
carl / kz5ca
OK, I will take a snare at this question.....If you built an SB-200 just for
10 meters with a nicely tuned tank circuit with a decent Q and a nicely
tuned input circuit, you will probably have a stable amp. When the amp is
used
on 10 meters with a tank coil that is NOT optimized, all sorts of things can
happen (and usually do)when you are working with a tube (572) that is a bit
finiky. The proof to this is that Carl (Km1H) and myself have pretty stable
Sb-200 conversions for 6 meters USING the single band theory.
73 Lou
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