I have had X-10 stuff last for 10 years, sorry to hear that your stuff fails
in three months.

Here are some X-10 links that may be useful........

firecracker dynamite interface protocol
(apparently is the small module that connects to RS-232 port)
http://www.x10.com/manuals/cm17a_proto.txt

http://mlug.missouri.edu/~tymm/

In the Download area of  http://www.activehome.com, you can download "protocol.t
xt"
explains the details of communications to the CM11A. This document can also be
found at: www.x10-beta.com/ActiveHome (case-sensitive).

page full of X-10 links including transmission theory
http://www.shed.com/links.html


E-mail me privately if you have some specific questions...
mailto:wft@frii.com

--
Gus Calabrese    Lola Montes      WFT Electronics
4337 Raleigh Street      Denver, CO 80212
303 964-9670......voicemail        fax  (see below)
mailto:wft@frii.com       http://www.WFTomegadogs.com

Alternate:   791 High Street     Estes Park, CO  80517
if no success with wft@frii.com, try ....
mailto:wft@bigfoot.com             then mailto:wft@eudoramail.com

fax   please do not send long faxes, they are auto-forwarded and the
resolution is not particularly good.  801 409 4969