>
>Hi Rich,
>
>You constant habit of weaving personal attacks into technical
>discussions ruins any hope of a meaningful conversation.
Pointing to your practice of tossing things off is hardly a personal
matter. You do it. I point.
>happy to get into technical details on how anything works, but
>engaging in an insult-trading thread is nonproductive.
>
So pull the plug before I publish the autopsy photos of tubes that came
from an AL-1500. The writing is on the wall, Tom. A lot of guys have
lost tubes in this amplifier. Your attempts to pass the buck to Eimac
are a laugher. Your constant denials are another.
>I really have nothing else to add, except measuring the tube in a
>text fixture (using the actual circuit values) or the actual unit for
>feedthrough loss is the only way to determine the effects of grid
>impedance on "shielding" inside the tube.
>
Numbers don't matter when the suppressors in a SB-220 intermittently burn
up on the 40m band. Given such evidence, virtually any bozo knows that a
VHF parasite is in the neighborhood.
>I still offer to send you a plot taken with a network analyzer
>showing this effect. It would be most educational for people trying
>to learn what really goes on inside a GG amplifier, and what
>causes instability.
>
It seems a bit odd for the teacher to be a guy who doesn't understand
scientific notation, who does not understand algebraic notation, who
never took a Physics of Electricity course, who has little understanding
of thermodynamics, and who claims that AC Circuit Analysis is not valid
for parasitic suppressors.
>
Why did you cancel your 28-November post and then refuse to discuss it?
Cheers, Tom
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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