[Elecraft] KPA-1500 efficiency with a Low-Power Setting

[Ignacy]

The bias would do nothing for low power.
Low power can be implemented in two ways, with different taps at final
transformer (KX3), and with different supply voltage (Expert amps).  The
first one is hard at a KW level. The second one requires  power supply with
different voltages. If the power supply can deliver only one voltage, not
much can be done. 

Ignacy, NO9E 



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