Check with Jim Brown K9YC. 

Sent from my iPhone
...nr4c. bill


> On Dec 22, 2016, at 4:10 PM, K9MA <[email protected]> wrote:
> 
>> On 12/22/2016 11:40, Jim Brown wrote:
>> IMD also affects CW. What we call CW is not "continuous wave," it is a 
>> continuous wave that is 100% modulated by a rectangular wave. That 
>> rectangular wave is rich in harmonics, and excites IMD. We hear it as 
>> clicks. 
> It would be interesting to see how much IMD it takes to significantly 
> increase key clicks of a "clean" keyed CW signal, like that of the K3.  I'd 
> expect the effect to be small, compared to that on an SSB signal for the same 
> level of IMD, but I could be wrong.  I suppose a simple test would be to have 
> a local friend with a P3 watch the signal as I turned down the supply voltage 
> on my K3.  Has anyone tried anything like that?
> 
> 73,
> 
> Scott  K9MA
> 
> 
> -- 
> Scott  K9MA
> 
> [email protected]
> 
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