Go further with this ParkerVision One MILE Network Wireless Kit! With a router, PC LAN card and a USB adapter, this network wireless kit delivers unparalleled performance for consumers seeking hi-speed data rates over maximum distances (ONE MILE open field line of site performance)

That last little bit is the kicker. Open field line of site[sic] isn’t realistic in most settings. Maybe in a corn field in the middle of Iowa (or one of those flat states).