Collaborate Disseminate
Cosmic radio signals are beaming to Earth every day – and astronomers are stumped as to their origin. Now a new study finds evidence that these signals, known as fast radio bursts (FRBs), could be caused by “starquakes.”Continue ReadingCategory: Space,… Continue reading “Starquakes” could be behind mysterious radio signals from space
The real action in the world of ham radio is generally in the high frequency bands. Despite the name, these are relatively low-frequency bands by modern standards and the antenna …read more Continue reading Antennas Can Be a Total Mystery
Even as music streaming services and podcast apps dominate most of our listening time, it’s still a great idea to keep a radio on hand, if for nothing else than …read more Continue reading ESP32 Drives Tiny FM Radio
There’s a quirk of broadcasting in Europe left over from the earliest days of the medium, which our American readers may not have encountered. As well as the familiar AM …read more Continue reading Portrait of a Long Wave Station in its Twilight Years
For all their talk of cooperation and shared interests, the nations of the world put an awful lot of effort into spying on each other. All this espionage is an …read more Continue reading It’s Numbers All The Way Down With This Tape Measure Number Station Antenna
Even though manufacturers of handheld ham radios have been busy adding all sorts of bells and whistles into their portable offerings, for some reason, many of them lack a modern …read more Continue reading USB-C Power For Ham Radio
If there’s something more tedious than winding coils, we’re not sure what it is — possibly rolling and wrapping coins; that’s really a bother. But luckily, just like there are …read more Continue reading All-Mechanical Coil Winder is a Scrap-Bin Delight
Turns out that it’s easy to broadcast radio commands that force Polish trains to stop:
…the saboteurs appear to have sent simple so-called “radio-stop” commands via radio frequency to the trains they targeted. Because the trains use a radio system that lacks encryption or authentication for those commands, Olejnik says, anyone with as little as $30 of off-the-shelf radio equipment can broadcast the command to a Polish train—sending a series of three acoustic tones at a 150.100 megahertz frequency—and trigger their emergency stop function…
Almost three years after the event, neutron scans by the Oak Ridge National Laboratory have uncovered the cause of the platform collapse that resulted in the destruction of the 1,000-ft (300-m) Arecibo Observatory radio telescope.Continue ReadingCatego… Continue reading Neutron images reveal zinc as culprit in Arecibo radio telescope collapse
Low-power radios, often referred to in the amateur radio community as QRP radios, have experienced a resurgence in popularity lately. Blame it on certain parts of the hobby become more …read more Continue reading Off-Grid Radio Also Repairable Off-Grid