In the days before integrated circuits became ubiquitous, providing advanced functionality in a single package,…
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via HACKADAY: Cavity Filters, The Black Art You Have A Chance Of Pursuing
A tuned circuit formed by a capacitor and an inductor is a familiar enough circuit,…
Read morevia HACKADAY: VHF/UHF Antennas, the Bad, the Ugly, and the Even Worse
When you buy a cheap ham radio handy-talkie, you usually get a little “rubber…
Read morevia HACKADAY: Hacking a Quansheng Handheld To Transmit Digital Modes
Have you ever thought about getting into digital modes on the ham bands? As it…
Read morevia HACKADAY: Decoding Meshtastic with GNU Radio
Meshtastic is a way to build mesh networks using LoRa that is independent of cell…
Read morevia HACKADAY: UV-K5 All-Band Mod, Part 2: Easier Install, Better Audio, and Two Antennas
OK, it’s official: the Quansheng UV-K5 is the king of hackable ham radios — especially…
Read morevia HACKADAY: Learning Morse Code with a DIY Trainer
Morse code, often referred to as continuous wave (CW) in radio circles, has been gradually…
Read morevia HACKADAY: A Super-Simple Standalone WSPR Beacon
We’ve said it before and we’ll say it again: being able to build your own…
Read morevia HACKADAY: Old Knobs with a Cast of Thousands
You have an old radio — in the case of [The Radio Mechanic], a Stromberg…
Read morevia HACKADAY: The Pi Pico, An SDR Receiver Front End
Making a software defined radio (SDR) receiver is a relatively straightforward process, given the right…
Read morevia HACKADAY: Ham Busts the Myth of Ground
Everyone who deals with electronics knows that grounding is important. Your house has a copper…
Read morevia HACKADAY: Building and Testing a 1912-style Radio
Doing electronics in the 1910s was rather rough, with the radio probably the pinnacle of…
Read morevia HACKADAY: The 6809 Lives On in an FPGA
At one point, the Motorola 6809 seemed like a great CPU. At the time it…
Read morevia HACKADAY: Printed Case Lets Pair of RTL-SDRs Go Mobile
We’ll admit to not fully knowing what [Jay Doscher] has planned for the pair of…
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