[Elecraft] K2/KPA100 Question

[George Winship, NC5G]

On Monday, September 10, 2012, Curt KB5JO wrote:

<I built K2 s/n 06424 with KSB2 awhile ago, and am considering adding a 
<KPA100.  Wonder whether this will just foul up a good radio.  I recall 
<reading about oscillation and other problems with the 100W addition to the 
<K2.  

The early KPA100 did have this problem, but it was ironed out years ago. An
upgrade kit was/is offered for those early KPA100's and the design changes
were incorporated in the rest of them.  

<Appreciate knowing whether the issues have been ironed out and any advice 
<about making this change.  In particular, I have talked on air with a
friend 
<who owns a K2/100 and his SSB signal on 40M is always weaker than any other 
<rig he uses.  

I have one of the early KPA100's, did the upgrade and have never had any
issues with it since. No problems with output on any band phone or cw. 


<Bottom line, is adding a 100W amp to what was originally a great QRP rig 
<just asking for trouble?

Absolutely not. Been a happy K2/100 owner for 11 years.

73, 
George, NC5G



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