>> It works. I'm using the same system at present to get a bluetooth
>> signal out of an (otherwise) screened room.
>> So we have a
>> 2,4GHz antenna feeding a length of line that goes through an aperture
>> in the screen and to another antenna taped to the side of a bluetooth
>> = USB adapter.

> And I am far from any knowledge in this area, but thought crossed my
> mind. If this is a screened test room to make a quiet environment, could
> not that signal transfer from one antenna to the other, work in the
> opposite direction and contaminate the screened area?

Yes, but.
Richard will no doubt comment on his experiences, but you could make
the system gains such that transfer would be minimal and reasonably
well know (say to within an order of magnitude or two :-) ).

The maximum allowable Bluetooth path loss can be taken up in the
transfer losses between TX-cable and cable-RX. The "antennae" can be
almost non existent, physically small and largely shielded from
incoming RF at the output end by the body of the Bluetooth receiver.
For extra points you can literally  shield the receiver and couple to
it by physical data cable on its "outgoing from the room" side
(depending on how it connects to its host.)


               Russell
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