[Elecraft] KPA1500 Power Level

[Bill Weaver]

I use mine on 30M @ 200W. Efficiency isn’t too as good, but that is a characteristic of a SS amp.

73,
Bill WE5P

Comfortably Numb

> On Sep 14, 2021, at 18:16, Barry Simpson <vk2bj at optusnet.com.au> wrote:
> 
> I have had a quick look through the KPA1500 manual and could not find any
> reference to running the amplifier at a lower power level than the rated
> 1,500w.
> 
> Can anyone comment on the implications (eg temperature, efficiency and IMD)
> of running a KPA1500 at say 500w by simply reducing the drive power.
> 
> Would the power level be stable if set to 500w or would it drift upwards or
> downwards during the course of an over on CW ?
> 
> Thanks
> 
> Barry Simpson  VK2BJ
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