Re: KPA-1500 on digital modes
Posted by
Roger D Johnson on
Aug 29, 2019; 9:44pm
URL: http://elecraft.85.s1.nabble.com/KPA-1500-on-digital-modes-tp7654828p7654856.html
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
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