>> Bottom line, the mods fixed the arcing, and I spent less than $3.00.
>> I'd like to ask Tom why these work -- he seems only to say that
>> parasitics don't exist, and the mods don't make sense. If that's the
>> case, why is my amp now working so much better? The filiment mod is
>> very clear to me, same with the step-start mod. Why is this such a big
>> deal? If you make your own suppressors, you'll spend very little, and
>> certainly won't hurt anything.
>
>You can hurt VHF stability Joe. The Measures suppressors I have measured
>actually increase VHF Q.
>
>What Rich overlooks is his suppressors with lower Rp are in SERIES with a
>long system.
** the VHF suppressor is in series with the anode. Since VHF-gain =s
transconductance x VHF-Rp, converting the series R of the suppressor to
the parallel equivalent, Rp, is useful.
>In that case, lower series resistance means higher Q in the
>system.
** True, but high series resistance produces low parallel-equivalent
resistance, which lowers amplification. [Ref. figures 12 and 18 on my
Web site]
- R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K,
www.vcnet.com/measures.
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