[Elecraft] KPA-1500 on digital modes

[john at kk9a.com]

It would be interesting to know the efficiency of the Expert amp at  
various voltage/power levels.

John KK9A



Roger D Johnson n1rj wrote:

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