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<font color="#ff0000">See below...</font><br>
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On 1/13/2012 4:25 PM, Kenneth G. Gordon wrote:
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cite="mid:4F10CB8A.32019.2EE6D796@kgordon2006.frontier.com"
type="cite">
<pre wrap="">Today, I replaced the original parasitic chokes with new ones, following a design by Carl
KM1H.
After all was finished, I now have 100 more watts output than I had with the originals, even
with well-worn Chinese tubes. 550 watts output on 80 whereas I was just making 450 watts
output previously. Input plate and grid currents appear to be identical with what they were
before.
<i>Measuring the original 47 ohm resistors, I find one is now 78 ohms and the other is 210
ohms.</i>
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<font color="#ff0000">How can this be? Can you explain?<br>
Guy,<br>
WA6OQQ</font><br>
<blockquote
cite="mid:4F10CB8A.32019.2EE6D796@kgordon2006.frontier.com"
type="cite">
<pre wrap="">
Other owners of SB-200s might want to do some investigation...
I will report the results of further testing...
Ken W7EKB
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</pre>
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