Re: [Amps] SB-220 parasitic suppressors

[R.Measures <r@somis.org>]

On Nov 3, 2004, at 10:43 PM, Tony King wrote:

> At 01:21 AM 11/4/2004, R.Measures wrote:
> > <snip>
> > A GS-35b has 0.12pF of anode-cathode feedback C.  An 8877 has 0.10pF 
> > of it, so they have a fairly similar amount of internal feedback.  
> > Our 8877 low VHF-Q parasitic suppressor retrofit kit has both an 
> > anode suppressor and a cathode suppressor.  It comes with a money 
> > back guarantee.  So far, the only refund has been to a guy who said 
> > he did not know how to solder.
> > --  Today's trivia question:  At its max freq of 1000MHz, what is the 
> > reactance in ohms of the output/input feedback path in a (g-g) 
> > GS-35b?
>
> Very interesting.  My guess: 1326

You cheated.  Seriously, a 1326-ohm feedback path is nuttin' to sneeze 
at if the 5000-ohm feedback path in a 2, 3-500Z amplifier is known to 
occasionally bring grief.
> > <snip>
cheers, Tony

Richard L. Measures, AG6K, 805.386.3734.  www.somis.org

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