Kismet, antenna diversity, receiver preamp

[themacuser]

Thank you for the reply.
I decide to go with a 400 mw mini pci card. Originally, I had considered getting a prism, but the ones I found were type IIIa and I needed type three B. So instead I got an Atheros. It says 400 mw but the few tries I made weren't impressive. Of course, that could be from loss from the u.fl to n male pigtail, but that seems doubtful. Also, it's a pain running two atheros at the same time.

Could you please recommend a receiver preamp?
Thanks again.

400mw isn't going to make any difference in Kismet - you're not transmitting.