[Lowfer] AC utility meter data signal

[Dexter McIntyre W4DEX]

Stan, W1LE wrote:
> Consider a isolation transformer on the UPS inputs, or a line voltage 
> stabilizer.
> Possibly a ferro resonant isolation transformer on the AC line to the UPS.
> The bigger the magnetics, the better.
>   
Thanks for the ideas Stan.  I tried an isolation transformer on the UPS 
input but it still switches.  Keep in mind that the signal the meter 
transmits has to pass through the power company transformer to be 
received at a distance.  I learned that the meters in my area report to 
a sub-station about 3 miles away.  The power to my house comes about 600 
feet underground at 14.4 KV to a pad mount transformer.  So the meter 
signal has to travel about 50 feet underground to the transformer, then 
underground through buried coaxial cable to the main distribution line 
and on to the sub-station several miles away.  From the sub-station I 
assume there is a dedicated data circuit back to the main office about 
25 miles away.

I once had a nice ferro resonant isolation transformer but after not 
needing it for many years I sold it at a hamfest :(
> Another alternative are RC networks or "snubbers" on the UPS input or 
> the X-10 devices.
> That would prevent the non 60 Hz energy from getting to the USP/X-10 stuff.
>   
That may work for the UPS units but if the X-10 control signal is 
filtered the units won't work. 
> Stan, W1LE     Cape Cod
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