[Elecraft] Problem after KPA100UPKT upgrade

Don Wilhelm w3fpr at embarqmail.com
Tue Nov 22 11:13:21 EST 2011


Sam,

I suggest you download the current manual for the KPA100 and begin with 
the diode voltage chart, then if necessary proceed to the DC voltage 
chart.  It is difficult to say what is going on without some reference 
information.

When making the measurements, be certain to observe the >10 watts and 
the < 10 watts columns.

For a visual check, be certain you put the toroid leads in the correct 
holes.  Is there any chance you put the resistor on the bottom of the 
board in the wrong place - that would cause the problem you are having.

73,
Don W3FPR

On 11/22/2011 9:17 AM, scramac wrote:
> I just upgrade my K2/100 with the KPA100UPKT upgrade last night but somehow
> I'm not getting any power out>10watts.   I thought I checked all my work
> before I assembled it back.   I have a Rev B KPA100 board and my K2 is SN
> 1866.  Could you point me to how I should go about figuring out what could
> be wrong with my K2?
>
> Thanks for the help
>
> Sam
>
> N2MXY
>
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