[Elecraft] Hi-Cur problem

[W3FPR - Don Wilhelm]

Ron,

If you are certain it was producing near to full output with the KPA100 
installed, then I would conclude that something happened when you removed 
the KPA100.

I would be looking for something like a short in the coax or its connector 
or something equally 'dumb' like that.  OTOH, Hi-CUR usually does indicate a 
problem with the LPF, but if it is showing up on all bands except 80 
meters --- that would mean that all the other low pass filters suddenly 
changed, and that is not probable.
Perhaps a bit of wire came loose as you removed the KPA100 - try a bit of 
'upside-down shaking'.

Did your power supply voltage sag somehow?  Do you still have a nice low 
resistance at the power connector?  Look for things of that nature before 
digging too deep into the K2 itself.

Perhaps it will be more clear after a bit of rest. Good luck!

73,
Don W3FPR

----- Original Message ----- 

> Hi,
>      I have been building a K2/100 for a friend, and it has all been going 
> very smoothly....until tonight.
> I had the amp installed and it put out the output it should on all bands, 
> but I didn't have the power calibration as good as I liked so I took the 
> amp out, removed the shield and set it up along-side the K2 ready to 
> adjust.
> Set to 5w, press tune on 40m and the HI-CUR warning comes up. I then find 
> it does that on *all* bands EXCEPT 80m.
> I take things apart and find it is a problem in the basic K2 ( #4506)
> Time for bed here and I am not thinking straight, but that has me bluffed 
> at present.