[Elecraft] KPA-500 "Output for Input" schedule?

[Guy Olinger K2AV]

That would be a KEEN addition to a K3/KPA500 combo.  Put it way out
there and give the industry yet another bone-breaking kick in the *ss.

On Thu, May 12, 2011 at 12:44 PM, Geoffrey Mackenzie-Kennedy
<gm4esd at btinternet.com> wrote:
> Hello Guy,
>
> The short answer to the first part of your question is yes, and the generic
> term for such a scheme is Predistortion. A term that has been used to
> identify a Predistortion scheme which employ digital techniques is a
> "Digital Predistortion Linearizer" (DPL), and its use can bring about a
> significant reduction in the level of IMD being transmitted compared to a
> classic class AB design. Unfortunately the relevant data that I have is
> packed ready to leave for Luxembourg.
>
> I don't know how easy or difficult DPL would be to implement in the K3, or
> in any other "already designed" rig which employs DSP, but I suspect that
> somebody else reading this could tell you.
>
> 73,
> Geoff
> GM4ESD
>
>
>
> On Thursday, May 12, 2011 at 4:15 PM, Guy Olinger K2AV wrote:
>
>> I would like to know if some kind of feedback (maybe complicated)
>> could bring about a quantum leap in linearity, like sampling the
>> output of the amp and feeding that back to the K3 to digitally
>> pre-alter the audio to cancel the distortion going out.
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