Supposedly this $129 dongle will bump the average 30 foot range of Bluetooth to an astonishing 20 miles. Although the included hardware will do just fine at about half a mile, it looks like you are going to need a pretty serious external antenna to reach the advertised range.

With ten times the transmission power of a regular Bluetooth transmitter, the possibilities are endless. Use on the battlefield comes to mind…

AIRcable Host XR [via Gizmodo]