We have made a comparison of the X10 signal strength when Comfort is used to transmit X10 signals through an XM10E and XM10U compared to a computer running Activehome connected to a CM12U X10 PC interface
The transmitters were placed in the same power point mains location while a marmitek PRU 256 Programmer and Logger was connected at various locations around the office to measure the received X10 signal strength
We found that the received signal from the XM10U and XM10E are about 20 to 40% weaker than that from the CM12U on average. This means that the performance of these X10 modules XM10E and XM10U may not as good as the CM12U, although we have tested only 1 item of each type.
Comfort sends digital signals to the XM10E and X1010U, and these devices are responsible for generating the X10 signals to the power line, so Comfort is not responsible for that signal strength.
Please take care when using Comfort to X10 communications You may need to use X10 boosters and filters.
The X10 connector at the slave panel also works- it sends the same signal as the one on Comfort. It will also receive X10 signals
It is best to use this for a separate phase or different building to avoid any clashes.
Yes, I'm having problems .. in that Comfort's control of the X.10 dimmers has become intermittent. I suspect something in the house is interfering with the signal.
What's weird is that this started happening after I upgraded the KT03 touch screen. I can see Comfort's X.10 transmitter appears always to be working (red led flashes on X.10 commands). I need to spend some time diagnosing (I.e. switch everything off in the house)
What looks of more interest is the http://jvde.us/xtb/XTB-IIR_description.htm which will boost the output from the XM10E.
I have found in the past I have had problems with X10 signals and bought a repeater to boost signals ect.
Although I am now reducing the number of X10 modules on my system (not overly keen on X0 although it has its uses)I found that if the XM10E is fitted directly on its own radial circuit (shortest possible cable length) with no other elements on that circuit it had the effect of being very effective and all the x10 modules work well, since I have done this I have had no problems with X10. I suspect most people are just plugging the module into existing circuits which is affected by other equipment that effects the signals it transmits