Re: X-10 Mystery - An Anti-Signal Sucker

[nobody@xxxxxxxxxxxx (Dave Houston)]

Is there any noise reading when there is no X-10 signal?

John Galvin found that the Monterey "was also extremely sensitive to out of
band, non X-10 signals... There were many instances when the Monterey gave
much higher readings than what was really there, due I'm guessing, to it's
sensitivity to noise outside the normal X-10 frequency range."

http://groups-beta.google.com/group/comp.home.automation/browse_thread/thread/6b1ba0cd1050658a/683aab3fb0577048?lnk=st&q=galvin+monterey+esm1+group:comp.home.automation&rnum=5&hl=en#683aab3fb0577048

"Robert Green" <ROBERT_GREEN1963@xxxxxxxxx> wrote:

>I've been testing new equipment for X-10 signal issues, first with my ESM1
>meter and now with my Monterey.
>
>Today's surprise came when plugging in a switching power supply for a new
>Vitek 2 channel video webserver.  The Monterery X-10 reading on the power
>strip was .98 before I plugged in the 12VDC 1.25A I.T.E. power supply and
>1.2 AFTER I plugged it in.  I assume this is some sort of interaction with
>some other device on the same circuit but how do I tell *which* device is
>interacting with the PS to apparently boost the X-10 signal? (Perhaps it's
>more accurate to say it keeps the signal from being attenuated somehow.  I
>guess know the answer already - start unplugging stuff!) :-(
>
>I'm sure it's a switched power supply, the case feels almost hollow.  Model
>HPW--1512A REV:C3 - it has an image of a globe and then the word "Elec"
>
>If I get enough these, I can get back to 4V X-10 signals housewide !  (Just
>kidding - that can't be true!)