[Elecraft] K2 / KPA ALC problem.

[Chris Kimball]

Don,

My KSB2 is revision E, July 20, 2004, with the "PSK31 ALC time constant
change" of KI6WX built-in.  It doesn't have the increased RF gain mod.  Is
there a reference to the mod that you suggest with the R9 -> 15K and a new
1K  in the Q1 base?

I was amazed at the instability at the 5W level under tuning to a dummy
load.  The measured power levels alternate between 4.3 and 6.4 W with no
points in between.  Seems like too much. Since I don't have a pot in this
range, I'm tempted to double R98 and see what happens. (I currently get 6.8
W on 10 meters for a 10 W setting and it doesn't bother me.)

Please let me know about the "1K in Q1 base" mod.

Thanks,

Chris
NQ8X



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