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Posted by Don Lancaster on February 7, 2005, 6:02 pm
Jim Thompson wrote:
> On Mon, 07 Feb 2005 23:00:32 GMT, Joerg
>
>
>>Hello Rick,
>>
>>
>>>If you have a EE PHD from MIT, go for it. Do you realize that the high
>>>fequency transmission characteristics of most peoples "powerline"
>>>changes constantly and essentially randomly? - RM
>>
>>
>>For power metering it seems that the OP only needs a very narrow channel
>>bandwidth. The challenge will be mostly in the analog and filter design
>>arena but it can be done. Then, of course, there are the transformers
>>that need to be bridged.
>>
>>Regards, Joerg
>>
>>http://www.analogconsultants.com
>
>
> The two remote electric power measurement schemes I know of:
>
> (1) RF transmitter at your meter, "neighborhood" receiver located on a
> pole, then connection to phone lines.
>
> (2) Modem connection between your meter and *your* phone line. Power
> company polls your modem.
>
> ...Jim Thompson
I guess I was involved in the earliest of powerline carrier
communications. Back in 1961 at Femco.
It did not work then and it will not work now.
Ferinstance, an ancient Diablo 630 printer has such a good noise filter
that it takes out any X-10 device within 200 feet.
--
Many thanks,
Don Lancaster
Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
voice: (928)428-4073 email: don@tinaja.com
Please visit my GURU's LAIR web site at http://www.tinaja.com
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