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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