[Elecraft] MH2 Microphone audio quality

[Leroy Marion]

I just purchased a MH2 to use with K2.  I'm getting reports of 5/9 but with 
some distortion or "rattle" audio with mic gain on 1.
If I try other mics, I get clean audio reports but way down in signal 
strength. The resistor is installed and jumpers there.
A Kenwood dynamic mike wired for K2 gets the best audio quality report, but 
with mic gain on 3, I barely put out any power.
Did I get a bad one or I am I doing something wrong?  What is the ideal 
impedance? I guess you need to use power required
mics only?
                                                  Thanks, Roy AB7CE
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