I have been seeing a lot of advertisements for Ethernet over mains power lines lately, even some claiming gigabit speeds. Has anyone had any experience with these? =20 Back in the mid 80s I got hooked on X-10 devices. Eventually my whole house was wired with them. I have removed all but one of them and that one will g= o soon. (To be replaced with a PIC and an nRF24L01+.) Initially, I had problems with APC battery backup units. I needed to put emi/rfi filters on them to prevent them from jamming the X-10 signals. Now, it seems like everything has some kind of switching power supply putting all kinds of noise on the lines. X-10 has become so unreliable that I have given up on them. =20 X-10 uses a relatively simple signal injected onto the mains. How can an Ethernet signal survive all the noise? What keeps you from connecting with the house next door? =20 Just wondering, Allen =20 --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .