I thought it was so that they are not harmonically related, and/or will not
mix to make another tone?
Joe
At 04:55 PM 4/24/2006 -0700, you wrote:
>Here is an age old question that has yet to be answered satisfactorly.
>
>What are the CTCSS frequencies derived from? Meaning why are they what
>they are? Like 123.0, 127.3, Why not 120, 125, 130 ETC?
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