Re: Waveman & X10

[nobody@xxxxxxxxxxxx (Dave Houston)]

"For fun" <somewhere@xxxxxxxxxxx> wrote:

>Thanks for the links.
>Do you have any further details on the X10 security codes? I'm making my own
>X10 RF receiver.
>Do you know of any difference in timing between the 315Mhz and the 433 MHz
>X10 signals?

Using the second illustration in the X-10 RF link...

     http://davehouston.net/rf.htm

the first byte is C0 C1 C2 C3 C4 C5 C6 C7
and the second is /C0 /C1 /C2 /C3 C4 C5 C6 C7.

Using the first illustration and its first byte 00110111, the second byte is
11000111.

There's no difference in timing between the 310MHz used in N. America and
the 433.92MHz used elsewhere. Most X-10 receivers tolerate wide variations
in timing. I've tested them with ±20% variations. Some European receivers
may have tighter bandwidth.

IIRC my BX24-AHT source code at...

     http://jeffvolp.home.att.net/bx24-aht_files.htm

shows how to discriminate between standard and security RF codes.

http://davehouston.net
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