(How to convert standard wifi dongles into digital broadcast transmitters) This talk is about modifying cheap wifi dongles to realize true unidirectional broadcast transmissions that can transport digital data like HD drone video with guaranteed latency over a range of tens of kilometers. The talk will show the necessary changes to the firmware and kernel of the wifi dongle, the forward error correction and software diversity (fuse several receivers in software) that is added to improve reliability and the most prominent use case: Flying a remote controlled drone at a distance of tens of kilometers.