While I've set up a few wireless networks, I'm certainly no network engineer - however, I think I really do need to treat myself to this Bumblebee Spectrum Analyzer. Based on a Samsung Q1p and omnidirectional antenna that connects via the CF slot, there are two models covering different frequency ranges.
Both priced at $4,500 each, Model 1 supports 902 to 928MHz, 2.4 to 2.5GHz, and 5.15 to 5.9GHz while Model 2 covers 2.4 to 2.5GHz and 4.9 to 5.9GHz. They're capable of measuring many wireless networks and applications:
"VoIP, 802.11b/a/g, Bluetooth, WiMAX, cordless phones and video, RFID, and broadband public safety data networks" Processor Editorial
This isn't really something I could ever use, but damn it looks cool.