Omer, I'm happy you have evoluted to RF ! :)
I think you have to switch the frequency to every repeater because you
will not be able to built and mount such good antennas to avoid the "biting
effect" between reception and transmision. I suggest for your application
( if it's the same ) to check also the X10. It might work for appartments
supplied from the same mains phase.
Replicating your transmitter on 3 phases, I think will work. Anyway X10
repeaters are cheapers than whole authorisations you might need for wireles=
s.

best regards and success !
Vasile
http://www.geocities.com/vsurducan


On Tue, 8 Oct 2002, [iso-8859-9] =D6mer Yalh=FD wrote:

> Any ideas on the rf repeater design?  Although it seems easy at first,
> it is kind of complicated I think.  Let's say there is a transmition at
> point A to point D.  However since the distance between point A and D is
> long the signal can't make it.  So I put two repeaters between point A
> and point D, namely at points B and C.
>
>   A              B               C                 D
>
> Now, B transmits whatever it receives (it is a repeater) so the
> transmittion from A received by B, again trasmitted by B.  Now, A and C
> receives these signals and again C transmits and this time B and D
> receives these signals.
>
> We are happy because the signal is transmitted to point D, but also
> transmitted to point B.  Since at point B we have a repeater, it will
> send the info again.  This will be like ping pong between B and C.
> Imagine if we have more repeaters together!
>
> Are there any info on repeater protocol? Or RF protocol that includes
> repeaters?  Any help is greatly appricated.
>
>
> =D6mer YALHI
> oyalhi@teksan.com.tr
> http://www.teksan.com.tr
> Tel : +90 212 613 22 00
> Fax: +90 212 544 70 35
>
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