Collaborate Disseminate
If you’ve seen a big air-variable capacitor, you may have noticed that some of the plates may have slots cut into them. Why? [Mr Carlson] has the answer in the …read more Continue reading The Cutting Truth about Variable Capacitors
[Distracted by Design] loves gear from the 1980s, though some of it isn’t as useful as it used to be. He happened across a cheap old FM radio with a …read more Continue reading Old FM Radio Upcycled Into Classy Bluetooth Speaker
America’s airwaves are haunted by zombies again, as we dig into a decade of broadcasters leaving their hardware open to attack, giving hackers the chance to hijack TV shows, blast out fake emergency alerts, and even replace religious sermons with expli… Continue reading Smashing Security podcast #445: The hack that brought back the zombie apocalypse
Looking up at the sky just after sunset or just before sunrise will reveal a fairly staggering amount of satellites orbiting overhead, from tiny cubesats to the International Space Station. …read more Continue reading Building a Low-Cost Satellite Tracker
The magnetic loop antenna is a familiar sight in radio amateur circles as a means to pack a high performance HF antenna into a small space. It takes the form …read more Continue reading Cheap VHF Antenna? Can Do!
In the global game of nuclear brinksmanship, secrets are the coin of the realm. This was especially true during the Cold War, when each side fielded armies of spies to …read more Continue reading Radio Apocalypse: Survivable Low-Frequency Communication System
A Dutch TV and radio broadcaster has found itself at the mercy of cybercriminals after suffering a cyber attack, and leaving it scrambling to find ways to play music to its listeners.
Read more in my article on the Hot for Security blog. Continue reading Hack halts Dutch broadcaster, forcing radio hosts back to LPs
Any radio amateur will tell you about the spectre of TVI, of their transmissions being inadvertently demodulated by the smallest of non-linearity in the neighbouring antenna systems, and spewing forth …read more Continue reading The Singing Dentures Of Manchester And Other Places
If you’ve got an existing smart home rig, motion sensors can be a useful addition to your setup. You can use them for all kinds of things, from turning on …read more Continue reading Smart Bulbs Are Turning Into Motion Sensors
Once upon a time, ham radio was all about CW and voice transmissions and little else. These days, the hobby is altogether richer, with a wide range of fancy digital …read more Continue reading Building A Ham Radio Data Transceiver On The Cheap