>I was put in a telephone booth, and every frequency was tested. My hearing >was very good; but with something missing in the upper regions. My limit >was exactly the same as the top note of the piano. 523.3 x 3. A little >under 1600 kz. > >Kenny Finlayson, RPT Nope, it's not 523.3 * 3, it's 523.25 doubled three times = 1046.5, 2093, 4186. Ron N
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