[Elecraft] KPA1000

[Ray Sills]

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