What was experienced radio operator Dennis Harmer trying to say? The official 1947 report into Stardust's disappearance had this to say on the subject: The 17.41 signal was received by Santiago ...

The signal CQ was commonly used among wireless operators -- and land-based telegraphers before them -- as a time-saving means of addressing all stations from one signal. The ability of CQ to ...

As part of the Lunar GNSS Receiver Experiment (LuGRE) experiment, NASA and the Italian Space Agency kickstarted a new era of ...