[Elecraft] KPA 100 Current too high?

[Don Wilhelm]

Karsten,

Are you measuring the current out of the power supply?  Or is that the 
current displayed on the K2?

If it is the current from your power supply, then I suggest that you 
re-check the bias adjustment for the KPA100.  See the KPA100 manual for 
the procedure.

Yes, the additional 4 amps at 11 watts is unusual, and an incorrect bias 
setting could produce that.

73,
Don W3FPR

Karsten Eppert (DK4AS) wrote:
> KPA100 is aligned according to the manual.
> When I key the K2/KPA100 up to 10 watts, current is up to 2 A. Looks 
> normal.
> Then I set the K2 to 11 watts (KPA100 engaded) Now current is approx. 
> 6 Amps.
>
> What are those 4 extra amps needed for?
>
> When I set K2 to 20 watts, it consumes approx. 8 amps.
> 30 watts: 10 amps
> 50 Watts: 12 amps
>
> Is that normal or is something wrong with my KPA100?
>
> 73
> Karsten
> DK4AS
>