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To: PA Engineer

Isn’t 440 Hz middle C?
Never mind - that is the fourth A (A4) on the keyboard.
Is that what you’re referring to?


468 posted on 02/14/2018 6:21:32 PM PST by meyer (The Constitution says what it says, and it doesn't say what it doesn't say.)
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To: meyer

Different. These were electrical currents we passed into the earth in a step fashion from 20Hz.


472 posted on 02/14/2018 6:25:19 PM PST by PA Engineer (Liberate America from the Occupation Media and Shariah Socialism.)
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