[Elecraft] K2 - KPA100 to much output on 80/40 m in SSB with Comp on

[Dr. Werner Furlan]

dear Don, 

thank you very much for the clear and quick response!
This is really not hard to do and I will report if it helps. (up to now all your 
hints were vy helpful ;-))

will this have a negative influence on the Mic gain in QRP mode?


73! de Werner OE9FWV


Don Wilhelm schrieb am 17 Feb 2008 um 14:47:

> 
> Part of those modifications is the KI6WX KSB2 Increased RF Gain Mod.  That
> mod worked fine with the QRP K2, but after the KPA100 was out for a while,
> some folks noticed that they had the same problem that you describe when
> the mod was installed.
> 
> The problem is that the ALC circuits on the KSB2 board are being 
> overdriven.  Add the following changes:
> On the KSB2 board, 1) change R9 to 1.5k; 2) break the path from KSB2 
> board P1 pin 6 to the base of Q1 and insert a 1k resistor from P1-6 to the
> Q1 base.
> 
> Those additions should calm the behavior down to normal.


-- 
 Murphy's 2nd Law of Computers:
No matter how good a deal you get on computer components,
they'll be half that price the week after you buy.


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