The AIRcable Host XR Bluetooth transmitter from Wireless Cables Inc., Santa Cruz, CA, can achieve a range of up to 30 km with professional installation. Using a 9 dBi omni-directional antenna, range is up to 2 km and up to 10 km with an 18 dBi directional antenna. Its high sensitivity lets it extend the range of weaker Bluetooth devices, such as cell phones and headsets. It is compatible with Windows, Mac, and Linux. Uses include standard and streaming data, headset communication, and stereo headphone communication. It can be used to deploy wireless sensor networks when used with the company's AIRcable Industrial XR.
Bluetooth USB Dongle from Wireless Cables
Wireless Cables Inc.