Thanks for the clarification, Larry. That's most enlightening.
I must say, I hadn't thought of the PL application for the 1000Hz tone. Last
time I had any contact with such a network was a quarter century ago when I
hung around our local auto salvage yard quite a bit, and they would poll
other yards around the Southeast trying to find bits and pieces to keep my
Triumph GT-6 on the road. The most self-contradictory collection of
mechanical systems ever assembled into one vehicle, it was no trivial task to
keep roadworthy, I can tell you. It was also my first introduction to the
concept of dimensional transcendentalism, years before Dr. Who was available
over here. But a haunted sports car whose interior contents would vanish
into some other continuum and return at random is rather off topic for this
reflector, I suspect....
73,
John
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