Another consideration for a KPA1000, would be the almost certain need for 220V power. Fine and dandy if it's already in the shack, but certainly an extra cost. Sure, you can run a 1KW room heater from 110V... so what if the line voltage sags to 100V on that circuit.. the heater will just deliver a bit less heat. Or my vacuum cleaner (which draws 12 A) works fine on about 110V. But, a linear amp will want to see a pretty stiff power supply to maintain linearity.

500 W is pretty much OK on household 110 V branch circuits. And, as others have pointed out... the whole amp with power supply fits into a K3 sized case. Pretty slick engineering, I say. But, I'm a QRP guys, so all this discussion is a theoretical item for me. :)

73 de Ray
K2ULR
KX3 #211
ARL sixty one


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