[Elecraft] [K2] Erratic power control with base cw K2

[Alastair Couper]

Further testing here. I tried  changing the control board MCU to the  
previous firmware version, and no change, so that is ruled out. But... I  
do notice that my keying wave form is not right. The rise time is very  
slow, about 50ms, the falling time is about right. And the keying sounds  
like it, very mushy. So there is something in that circuit, with the  
keying bandwidth mod installed, that has changed.  Probing further...

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ac