DIY Antennas, QRP, SDR & Ham Radio Projects from VU3DXR
A collection of news articles and weekly digests covering developments in amateur radio, SDR technology, digital modes, spectrum issues, new equipment, and community projects from around the global ham-radio ecosystem. ham radio news
Radio Waves Weekly — Issue #011 focuses on hands‑on amateur radio. Inside you will find a BBC call‑out for historic shortwave recordings, simple HF preselectors, DSP and CW audio filter projects, and several practical multiband antenna ideas from active operators and bloggers.
Welcome to Issue #007 of Radio Waves Weekly! This week: 3Y0K is finally on the air from Bouvet Island — the most remote uninhabited island on Earth — and the pile-ups are epic. The Rebel DX Group is next up with a Kanton Island activation starting March 25. Plus a pocket-sized Indian SDR that does FT8 without a computer, the freshest QRP Labs kit, two wire antennas you can build this weekend, and a handful of contests and events to fill your log before spring.
On the day Israel and the United States launched their first strikes against Iran, a mysterious shortwave radio station flickered to life on 7910 kHz. It hasn’t gone silent since. Broadcasting streams of numbers in Farsi — a Cold War spy radio technique that was thought to be fading from use — the signal has now been logged from Europe to North America. Radio amateurs have given it a name: V32
Welcome to Issue #006 of Radio Waves Weekly! This week: an Arduino that transmits clean SSB with 8 components, an open-hardware SDR transceiver with PureSignal TX, a garden fence turned into a stealth HF antenna, and a broadband V wire that covers every HF band without a tuner.
In February 2026, amateur radio gained its fastest weak-signal digital mode — and immediately fractured it. FT2 promised ~4-second QSOs and contest-level throughput, but within days of its first on-air tests it split into two incompatible implementations. Here’s the full story of the “FT2 war,” why it happened, and what it means for HF operators everywhere.
Welcome to the fifth edition of Radio Waves Weekly! This week’s digest brings you fresh developments from the SDR world — including a networked receiver making waves at Hamcation — alongside exciting digital mode innovations, a new real-time DX spotting platform, citizen science workshops, rare DXpeditions, and a community effort to keep a beloved ham radio clock ticking.
sBitx v5.301 update refines the v5.3 platform with FT8/FT4 stability fixes, UI polish, improved logging/UDP integration, and CW decoding tweaks — enhancing reliability of the Linux SDR transceiver
Welcome to the first issue of Radio Waves Weekly! This is a curated digest of the most interesting news, DIY projects, and tools from the world of Amateur Radio, SDR, and RF electronics.
New Quansheng UV-K5/UV-K6 radios use a PY32 MCU incompatible with STM32 firmware — flashing custom firmware can brick the radio, making MCU identification critical before updates