[Elecraft] RE :KPA100 upgrade and KAT100 problem

Vic K2VCO vic at rakefet.com
Sun Nov 19 16:48:01 EST 2006


Don Wilhelm wrote:

> Here is what happened on C80 and C81 - for a short time after the 20 and 17
> meter low power output problem, it was thought that the C80 and C81
> capacitors had to be a higher value.  Well as things turned out the problem
> was really that the resistor manufacturer had changed R19 and R20 (1.6 ohms)
> to an inductive design without notifying Elecraft. 

How well I know this!  Without going into detail, I have 5600 pf 
capacitors installed.  Is this a possible cause of instability on 21 MHz.?

I really don't want to take the board off the heatsink again unless I 
know for sure that this is a likely cause of my problem.
-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco


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