Re: [Elecraft] KPA100 Update Mod

Hi Roy, I just completed my KPA100 the other night and I used just the split washers as per the instructions. Keep in mind that when you tighten down the srews the the split washers compress and become mostly flat like the fiber washers. Just don't over tighten them and crush Q3 & Q4.

RE: [Elecraft] KPA100 Update Mod

Roy, I do not see any instructions in the KPA100 manual that indicate that fiber washers are to be used on Q3 and Q4. Use only the split lockwashers and all will be well. I have built many KPA100s and as far as I know, the fiber washers are only used on the speaker. 73, Don W3FPR > -Origin

[Elecraft] KPA100 Update Mod

I am getting ready to secure Q3 and Q4 to the heat sink. I was using black fiber flat washers. Now the instructions say to use split lock washers. Am I supposed to eliminate the black fiber washers that completely fill the circumference of the screw holes and use split lock washers only? Th