[Elecraft] K3 voltage under load

[Jack Smith]

I've made some measurements of my K3's efficiency versus DC supply 
voltage, output and frequency at 
http://www.cliftonlaboratories.com/elecraft_k3_efficiency.htm

Jack K8ZOA
www.cliftonlaboratories.com



Alan Bloom wrote:
> On Wed, 2009-06-03 at 10:59 -0700, hb9brj wrote:
> ...
>   
>> Guess the major problem resulting from voltage drop is a reduced efficiency
>> of the KPA3.
>>     
>
> Actually, for a given power level the KPA3 probably has better
> efficiency.  For lowest heat in the PA, the supply voltage should be as
> low as possible that still works at the selected power level.  But the
> system efficiency is lower because of the power loss in the cables.
>
> Al N1AL
>
>
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