802.11x, PCMCIA (or USB) adapter with RSSI and external antenna

Hi,
There are vast amunt of variety for 802.11 network adapter cards in the market.
For an experiement I am searching for 802.11x (a,b,g) adapter card with
PCMCIA (or USB) interface. This experiments will look at the RSSI (Rceive Signal Strength Indication), channel capacity (throughput), as a function of the range between two communication nodes, antenna type, polarization etc.
(A) Do you know any off the shelf 802.11x network adapter card with the following specs * Software drivers for MS - Windows, Linux and QNX operating systems * PCMCIA (or USB) interface * RSSI (Rceive Signal Strength Indication) * External antenna connection (B) If you have you done similar experiments would you like to share your findings with us?
Regards
Miem Chan
miemchan at yahoo com au
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