[Elecraft] KPA-1500 Efficiency As A Function of Input Power

[Bill Frantz]

And I would guess it was running in class C, which is not 
linear, so only useful for certain modes (including FM). Class C 
can convert most of the input power to RF power.

73 Bill AE6JV

On 8/17/18 at 11:48 AM, k6dgw at foothill.net (Fred Jensen) wrote:

>One 10 KW FM transmitter I helped build used four 4-1000A's in 
>parallel and the filament power was 600 watts. Efficiency, 
>including filament power was just over 70%.
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