Hi folks,
My thoughts on the '104: Back in ancient tube days, gain was not so easy,
and perhaps one entire pre-amp stage could be eliminated by using the high
output voltage from the crystal element which matched very well the near
infinite impedance of a small grid. Hence the advantage of the delicate,
vulnerable xtal cartridge.
Now gain is cheap and easy, along with response control of the audio
bandpass. A rugged, lifetime-lasting mike such as a dynamic, with a
relatively flat response seems the natural way to go. If you want to have a
response curve other than flat, the place to achieve it is in the
transmitter's pre-amp circuitry. Xtal elephants seem silly in the space age.
:-)
Roy K6XK
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