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by jasonjs 3886 days ago
These radios have been available for quite some time, it's the Semtech SX127x line (e.g. SX1276). I was looking into LoRa and other long-range IoT WAN radios about a year ago for a research project.

You can get cheap (22 USD) Arduino-compatible development boards here using HopeRF modules, which work great with the RadioHead library:

http://www.anarduino.com/miniwireless/ http://www.airspayce.com/mikem/arduino/RadioHead/

(I have no affiliation with the websites.)