Maybe we should do a poll about the filters. If you use Insteon do you have filters. If you have UPB do you have filters etc etc. Same with accesspoints and repeaters etc for the different technologies. These devices can add up fast at $25 or more a pop.
It would be interesting to see how many of these devices people have to buy to get their lighting systems to work (why should you have to spend hundreds more on these things). I am guessing but I would imagine that most people with UPB and Zwave do not have filters or repeater/accesspoints (I would only count accesspoints greater than 2 unless there is a hardwired coupler then only count more than 1 accesspoint needed for RF).
Glad you asked Digger,
I have a 4500 sq foot home on 3 levels. We have the normal complement of PC's (6), TV's 5, A/V systems (3), and general wall warts for cell phones, routers, switches, etc. We've begun installing both dimmable and standard CFL's (roughly 35 at the moment) as our incandescents die off. Roughly 40 Insteon devices installed with one filter on a Toshiba laptop.
I've been experimenting with I2 extended messaging. During that time I learned that I didn't need any Accesspoints installed to communicate reliably throughout the house. I do have a passive X10 coupler installed at the panel. Other items of interest:
1) I quickly found that none of my existing Insteon devices repeat the I2 signals.
2) My accesspoints (Rev 1.0R) do repeat I2, but are not required for reliable communication.
The bottom line is, with only 1 I2 device installed and no repeaters or accesspoints I am able to communicate reliably throughout the house.
So why has my experience been positive when others have had so many problems? Without going house to house with an oscilloscope I don't know how to answer that. My system is far from noise free. I can show you plots of 20V P-P CFL noise (120Khz) that is riding on my system. The point is that the noise occurs at the sine peaks and doesn't affect the Insteon or X10 signals operating at the zero crossings. I would also think that my home has a normal number of signal absorbers. As I sit here looking at my PLM, it's plugged into a powerstrip along with 5-12V bricks powering routers, switches, cable, etc. Not what I would call a pristine environment.
Summarizing - If I have the normal number of noisy/signal absorbing devices, then the problem can't be the devices themselves. A person who requires an inordinate number of filters or accesspoints with the same number of filters/absorbers has other problems. Whether those problems are related to terminations, layout (heavy current devices mixed with lighting), or power delivery I can't say.