[Elecraft] KPA-1500 on digital modes

[Roger D Johnson]

I just did a quick check:

At 1500 watts eff is 56% and pwr diss is 1179 watts
    1000              44                  1273
     500              30                  1120

My Expert 1.3K-FA had 3 voltage levels:

48 volts for full power (1300 watts)
38           800 watts
32           450

I no longer have the amp so I can't check the eff at those
voltages and power levels.

73, Roger


On 8/29/2019 9:03 AM, Roger D Johnson wrote:
> It's interesting that the heat that has to be dissipated is pretty close
> to 1000 watts in all these scenarios! Running the amp at less than full
> power buys you nothing.
> 
> 73, Roger