gardenyu wrote:
> Sorry, I mistakingly used the phrase "high frequency".
>  
> but X10's frequency is always like 60Hz or 120 because it only appears on zero crossing edges.

You might want to look at these:

http://www.linuxha.com/common/mTW523/sniffer.html
http://www.linuxha.com/common/mTW523/index.html
http://www.linuxha.com/common/mTW523/mtw523.html

The last one discusses the bits and things. You're looking at a
data rate less than 50 bps (that's from memory). X10 has some real
reliability problems (beside being slow) that you should get used
to. They can totally shut down X10 signals from getting through.

-- 
Linux Home Automation         Neil Cherry       ncherry@linuxha.com
http://www.linuxha.com/                         Main site
http://linuxha.blogspot.com/                    My HA Blog
Author of:    	Linux Smart Homes For Dummies
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