[Elecraft] K3 switches off during high power TX gain calibration

[Tom Hammond]

Dick:

Is it possible that your PSU is going into over-current foldback protection
and dropping the output voltage down to nearly 0 volts?  What you describe
is characteristic of that problem.

try setting the K3 to 25W or 50W and see if the problem still occurs. If it
does NOT, then increase POWER (and the current required to generate that level
of output) until the problem again appears.

73,

Tom Hammond   N0SS

At 14:06 08/16/2008, you wrote:
>Hi All
>
>I finaly had my K3 working after five weeks and several replacement 
>boards at 10 watts. I just installed the 100 PA. I'm up to do the 
>high power TX Gain calibration
>
>Started on 160, wich was ok. But have trouble on 60, 30 and 6m. When 
>I press tune, the radio switches off it self.
>
>Any one else had this problem? Any info is welcome
>
>It sure takes a long time this way to get the K3 working received it 
>5 weeks ago, and still not finished
>
>73 de Dick PA3FQA
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