Crazy George wrote:
Next week, I am
going to be doing some library research at a technical library, and I am
going to scan through the issues of IRE Transactions on Power Equipment, or
whatever the name was pre-IEEE, ...

It was the American Institute of Electrical Engineers although I chose to
join the Institute of Radio Engineers instead, for obvious reasons. :-)

... from 1950 to 1965 or so, and I'll get back
to you. I already know the answer, and I think so do you.

I assume 400 KHz Power Line Carrier is hardly anything like BPL which,
I assume, is a lot broader banded than that. Power companies use Power
Line Carrier equipment to control sub-stations from a central location.
They don't generally use it between the sub-station and residences so it
is usually not a problem for hams. But I have heard of power companies
using Power Line Carrier systems to read their meters under computer
control. Do you have any other specific questions? I'll try to dust off
my failing memory and answer them.
--
73, Cecil http://www.qsl.net/w5dxp



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