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    <div class="moz-cite-prefix">On 5/9/2017 3:36 PM, Andrew Rich wrote:<br>
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      <div>1200 and 2200 tones same amplitude</div>
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      <div id="AppleMailSignature">Phase shift at 0 volts</div>
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    Zero crossings don't matter; the frequency changes happen at symbol
    boundaries.<br>
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    Scott<br>
    N1VG<br>
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