I crossed five states, dodged speed traps, and delivered Katz’s pastrami from New York to Michigan while it was still warm, ...

Imagine the terror if a celestial visitor was not only on a collision course with Earth but also sending a mysterious radio ...

Santa Net is an annual December event where licensed amateur radio operators use RF and EchoLink technology to connect children with Santa Claus on the airwaves.

Abstract: Directional antennas have been widely used in unmanned aerial vehicle (UAV) communications to improve the transmission efficiency. For a UAV mounted with directional antennas, its tilting ...

Radio signal dead zones can create a potentially dangerous situation for emergency responders, yet dozens of high-rises in Fort Lauderdale have them, city officials say. That means police and ...

Abstract: As a crucial step for routing establishment in multi-hop mobile ad hoc networks (MANETs), topology discovery (TD) is extremely challenging when directional antennas are used. In this paper, ...