Collaborate Disseminate
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
One day on Mars is about 37 minutes longer than an Earth day – but it seems both planets are working to fix the gap. Data from NASA’s InSight lander have revealed Martian days are getting ever so slightly shorter, and scientists aren’t sure why.Continu… Continue reading While Earth days get longer, NASA finds Mars days are getting shorter
Digital modes are all the rage these days in amateur radio — hams are using protocols like WSPR to check propagation patterns, FT8 to get quick contacts on many bands …read more Continue reading Break Free from Proprietary Digital Radio
The 433 MHz spectrum is a little bit of an oddball. It’s one of the few areas of the radio spectrum which is nearly universally unlicensed, meaning as long as …read more Continue reading RF Remote Made Easy
Encrypted communications are considered vital for many organizations, from military users to law enforcement officers. Meanwhile, the ability to listen in on those communications is of great value to groups …read more Continue reading Did TETRA Have a Backdoor Hidden In Encrypted Police And Military Radios?