I suspect my mic problem is with the cartridge and I will be getting a
new one.
The now problem seems to be that I just can not seem to get 100%
modulation no matter what mic I use.
When I adjust the scope so the carrier is +/- 1 div, I can never get it
quite to +/- 2 and 1.5 is pretty typical.
On the other hand, I have no trouble getting a flat line between cycles
with too much audio which I understand is the indication for over
modulation.
I am using a audio generator at 1 kHz talking to an earphone, against
the mic. The modulation meter can easily be pinned if I use an
amplified mic but it has no effect on the top of the envelop.
What does all this mean?
js
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