http://elecraft.85.s1.nabble.com/KPA-500-Output-for-Input-schedule-tp6352735p6356752.html
I'm a CW man, so I should keep my mouth shut, but wasn't the "Class A Mode" provided by
Of course their are some 'turn the gain to 11' guys, but there are also those who care
>
> How so? Most hams aren't looking for linearity. The great majority
> merely want to be heard and understood ... and many don't seem to care
> much about the latter. If they were they wouldn't have the mic gain
> and compression cranked up beyond all rational measure. Predistortion
> might have a certain coolness factor to it, but I doubt it would
> generate even a ripple in the marketplace.
>
> Just for grins, where do you usually have your Mic Gain and Compression
> levels set? What power supply voltage do you run your K3 with, and what
> is your power output setting?
>
> Dave AB7E
>
>
>
> On 5/12/2011 9:58 AM, Guy Olinger K2AV wrote:
>> 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
>> <
[hidden email]> 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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