Wireless data transmission

[Grumps]

4Mbps Fast IrDA should do the data rate, and the chips and transceivers
are
off-the-shelf.

Thanks, that looks exactly like what I need.

 

[JosephKK]

There lots of moderate to high cost ready made solutions out there. Google
"Rotary coupler". They may give you some ideas, but watch out for patents
owned by lawyers.

1 Mbps is pretty high..you need a carrier up at least 27Mhz, which would
be my first thought, since its essentially cowboy territory. Anything
goes below a half watt or so.

Nonsense. You do not need a "carrier" at all. Direct modulation at 1 MHz
will work when you have a decent S/N. It is often called Manchester coding.