[Elecraft] K3 Transmit current drain

[k6mgo]

I was playing around with my K3 and MFJ 4225 switching power supply, when I
noticed a strange thing. As you increase the power output, the input current
rises very quickly. Example:
in Receive mode, the K3 was drawing 2 amps. 
In Transmit mode, CW, SK key down, at 1 watt out, it was drawing 4 amps
5 watts out, it was drawing 5 amps 
8 watts out, it was drawing >6 amps
15 watts out, it jumped to 15 amps
30 watts out, it jumped to 20 amps

Didn't want to increase the power anymore, but, this seems excessive to me,
anyone else ever notice this?

Would appreciate any comments on this matter,

73, Bill, k6mgo

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