> It might sound like a real stupid question, but I was wondering if
there
> might be a possibility to run two 802.11 connections on different
channels
> over one antenna (using two separate 802.11 adapters)...
>  Possible?

Not without some expensive hardware, or a lot of loss.

A Wilkinson combiner (AKA splitter from radio shack) is the easiest way,
very lossy, and you will end up with a lot of energy from transmitter A
getting into receiver B. This will probably make receiver B deaf as a
post, and likewise with the transmit signal from B getting into A.

Such things are done, but the filters and such to implement it are
expensive, and it's not a "plug and play" thing.


Why do you feel the need to use one antenna? 2.4 GHz antennas are so
tiny..





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