>
>Rich said: "I would bypass the high-tech research, cut to the chase, and try
>a lower
>Rp suppressor". This was in response to a method of scientific approach
>to parasitic oscillation suppression.
>
>I suppose I should not comment on someone else's view, but it seems rather
>sad to reject science and resort to a magic potion. Half of the joy of
>amatuer radio is the process of investigation and learning. By using a
>"guaranteed cure all Measures Parasitic Suppressor", I learn nothing.
? The low Rp suppressor is not a cure-all. Lower Rp means less VHF
gain. If Rp is not low enough, oscillations are still likely.
>Even if it works, I am short-changed.
? IMO, a dipmeter is a good tool for locating the resonant circuit that
is supporting the parasitic. A fairly good place to start is on either
side of the blocking capacitor. note-- pull mains plug first.
>
>I use an approach similar to the one mentioned. And, I figure every failure
>makes me that much smarter than the guy who has not failed. Every problem
>is an opportunity to investigate. And, every success bring with it the
>knowledge that I understand the amplifier and am master of it. For that
>reason, if for no other, I reject the "Vitamin Rp" pill.
>
? Higher Rp means higher VHF amplification - just the ticket for
building an oscillator.
cheers Colin
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
--
FAQ on WWW: http://www.contesting.com/FAQ/amps
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
|