Read my earlier post on CEbus.  The technology is spread spectrum
over power line, but it has a physical layer spec. for RF transceivers
too.

If you go with 900 MHz spread spectrum tranceivers, you shouldn't have
much of a problem setting them up.

However, if you are only using it once a month, go with a two way pager
or cell phone and run it into a pic.  Research in motion has a great
OEM pager board and it's communication protocol is only 1 or 2 kilobytes
to implement.  http://www.rim.com

Craig



> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Rob Bakker
> Sent: August 10, 1999 5:05 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: X10 data n stuff
>
>
> Many thanks for your thoughts people,  but i would like to be able to
> transmit data a little further down the powerlines than just to the next
> pole transformer.  Anyone know of a device able to do this?
>
> I have thought of:-
> - something along the lines of X10
> - modem/telecom but its would be too expensive to pay for a line
> only to use
> it once a month..
> - radio link ( 2.4 Ghz ) but this gets tricky to set up and it
> seems a shame
> to waste all the bandwidth just to send data @ 2400bps from a PIC
>
>
> any thoughts?
>
> Rob@waikato.ac.nz
>