Depending on environment and application, infra-red may be an option at 3
metres.


      Russell McMahon
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> I have an application where I'd like to send short burst of data about 3
>meters. Low power consumption on transmitter and receiver is important.
>Small size is important. I've been thinking of using the Micrel single
>chip receiver up in UHF, but the 125 kHz stuff is interesting. The RFID
>stuff I've seen has had a fairly powerful transceiver and a transponder
>"tag". Anyone know of separate low power transmitter/receiver
>applications in this frequency range, or is it better to go to UHF?