>Yes, that's what I have to design. The garage units don't have to be very
>low power though, and that's a consideration here. ISTR they operate at
>50MHz or so, so they are physically fairly large, at least the old ones=
 are.
>The keyless entry systems operate at higher frequencies, so the antenna is
>tiny.

        IIRC, the newer tx/rx pairs, used UHF. And they ARE low power. Around=
 10mW.


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Alexandre Souza
taito@terra.com.br
http://planeta.terra.com.br/lazer/pinball/

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