DIY Antennas, QRP, SDR & Ham Radio Projects from VU3DXR
Sunday, February 08, 2026 Welcome to the third edition of our weekly digest! We are tracking the peak of Solar Cycle 25 and highlighting some incredible local and global engineering projects. 🔝 Top Links of the Week 1. ARRL Becomes Supporting Partner for America250 The ARRL has officially joined “America250” to celebrate the 250th anniversary […]
Sunday, February 01, 2026 Welcome to Issue #002! This week is packed with massive breakthroughs in open-source SDR, “Make in India” military radio news, and some very clever DIY projects for your weekend shack time. 🔝 Top Links of the Week Open.Space: Open Source SDR Phased Array for Moon Bouncing This is a game-changer. An […]
Explore ATS Mini, the ESP32-based DSP radio, and ats mini web interface . Learn features, spectrum analyzer, memory control, and setup guide.
The Hydra SDR RFOne, a highly anticipated software-defined radio (SDR) receiver, has been facing criticism from users and experts alike due to persistent performance issues. Despite its promising features and capabilities, the device has been plagued by problems that have left many disappointed. HydraSDR RFOne has been met with criticism primarily regarding potential gain issues, […]
After weeks of anticipation and user feedback, the ATS Mini V3S has officially hit the market. The new release directly addresses the battery drain issue that affected its predecessor, making this a much-needed upgrade for loyal ATS users. What’s New in ATS Mini V3S? The V3S model is not just a minor update—it’s a refined […]
Software-Defined Radio Program RadioSport SDR Gets Key Upgrade for Broadcast and Signal Enthusiasts The amateur radio and software-defined radio (SDR) community is buzzing with the release of RadioSport SDR v1.7, a significant update to the popular portable SDR program. This new version, now available on GitHub, introduces a highly anticipated feature: FM RDS (Radio Data […]
By DXR News Desk August 13, 2025 The National Oceanic and Atmospheric Administration (NOAA) is nearing the conclusion of its long-standing Polar Operational Environmental Satellites (POES) program, a constellation that has provided critical weather and environmental data for decades. As of today, the remaining satellites—NOAA-15 and NOAA-19—are on the cusp of decommissioning, marking the transition […]
Dead batteries are every electronics enthusiast’s nightmare. Whether it’s a forgotten device left running overnight or equipment accidentally switched on, battery drain can be costly and frustrating. This automatic battery saver circuit offers an elegant solution using the versatile 4060 oscillator and counter IC, providing reliable protection for your battery-powered projects. How the Battery Saver […]
A speech processor is an essential component in amateur radio and audio systems that enhances voice clarity and intelligibility. This comprehensive guide will walk you through building a simple yet effective simple speech processor circuit using the LM358 operational amplifier and discrete components. A speech processor is an electronic device that modifies audio signals to […]
The circuit shared here is a Microphone Preamplifier with Audio Peak Limiter, often used in audio recording, amateur radio, or intercom systems. It amplifies weak microphone signals and includes peak clipping diodes to prevent signal distortion from loud inputs. Looking to boost your microphone signal while keeping audio distortion in check? This two-stage transistor microphone […]