I gleefully unwrapped my first UltraWideBand USB 4 port hub and UWB USB access stick, plugged them in at opposite sides of the lab, and 'lo, they worked! I transferred a big movie in minutes. So then fired up the newish Tektronix real-time-spectrum-analyser, waved a probe in the air near the UWB stuff. ~Not a sniff of RF signal! LNA amp on the vivaldi antenna, still nothing. remove 1.25 metre Satellite dish from roof, mount Sat dish upside down in lab laser-pointed at the UWB hub, added 10dB gain wideband vivaldi antenna at feedpoint, 1dB noise figure LNA and, yes started to see the data. Ultrawideband is really a low probability of intercept, low probability of detection signal!
now we've tested devices from Belkin, Iogear, Olidata, Wisair etcetera & looked at the detect and avoid (interference) mechanisms, established a reasonable spectrum mask for in-car use, performed conducted and OTA tests
I think a lot of the hardware is still in alpha or early beta phases. I can't get any of the UWB devices to stream a webcam. It has a great potential for house/office informatics wiring replacement, ultra safe low power, high data rate and very secure.
it's definitely a GO, just as you say Bill, When!!??