least-costly but still effective) to filter the noise, a crazy idea hit me. While trying to figure out the best way (i.e.
The problem is, some draw more than 5 amps, and they're clustered on two circuits, which would mean that I'd need $100 in wire-in filters. I determined that, surprise, surprise, the UPSes/printers/monitors are the noisiest devices. So yesterday I went through all the circuits in the house, shutting them all off, except for two circuits on opposite legs for testing, and start turning them back on, watching for where the noise is being introduced on a per-circuit basis. Recently, I picked up a handful of XPPF's to try to squelch some of the noise. I also have the XPTT and XPTR test transmitter/receiver pair, which helps quite a bit. I have a plug-in phase coupler and also have a plug-in phase amplifier/repeater (so I can compare the difference between passive coupling and active repeating), which sort of helped, but not completely. The usual 'some devices don't want to turn on intermittently, and some devices don't always want to turn off once they've been turned on'. Ok, so I've been fighting with X10 noise problems since I moved into this house.
