Collaborate Disseminate
[Bill Dudley] had a problem. He had an Onkyo AV receiver that did a great job… until it didn’t. A DSP inside failed. When that happened, the main microprocessor running …read more Continue reading Onkyo Receiver Saved With An ESP32
[Jamie] decided to build a generator, and Lego is his medium of choice. Thus was created a fancy levitating generator that turns a stream of air into electricity. The basic …read more Continue reading Levitating Lego Generator Runs On Air
GPS is an incredible piece of modern technology. Not only does it allow for locating objects precisely anywhere on the planet, but it also enables the turn-by-turn directions we take …read more Continue reading Writing a GPS Receiver from Scratch
GPS is an incredible piece of modern technology. Not only does it allow for locating objects precisely anywhere on the planet, but it also enables the turn-by-turn directions we take …read more Continue reading Writing a GPS Receiver from Scratch
There’s something magical about the clunk of a heavy 1950s portable radio – the solid thunk of Bakelite, the warm hum of tubes glowing to life. This is exactly why …read more Continue reading Hacking a Heavyweight Philco Radio
Shortwave radio has a charm all its own: part history, part mystery, and a whole lot of tech nostalgia. The Hallicrafters S-53A is a prime example of mid-century engineering, but …read more Continue reading Shortwave Resurrection: A Sticky Switch Fix on a Hallicrafters
When the first artificial satellite, Sputnik, was put into orbit around Earth, anyone in the path of the satellite could receive the beeps transmitted by the satellite provided they had …read more Continue reading Communicating With Satellites Like It’s 1957
The moon is a popular target for ham radio operators to bounce signals since it’s fairly large and follows a predictable path. There are some downsides, though; it’s not always …read more Continue reading Bouncing Signals off of Satellites Other than the Moon
Touch screen head units are pretty much the norm these days. Many compromise with annoying on-screen volume controls or tiny buttons. If you find yourself with such a unit, you …read more Continue reading Android Head Unit Gets Volume Knob Upgrade
There are many ways to build a radio receiver, but most have a few things in common, such as oscillators, tuned circuits, detectors, mixers, and amplifiers. Put those together in …read more Continue reading All-Band Receiver Lets You Listen to All the Radio at Once