Build your own Delta Loop VHF antenna for 145 MHz with our clear diagram, dimensions, instructions, explains construction, feed point, and tuning tips.
Aperiodic Multiband Wire Antenna: A Simple and Effective Design
Aperiodic multiband wire antenna design by HB9KX/DK7ZB: 10.5 m asymmetrical dipole with resistive loading for broadband HF coverage without complex tuning
Multi Band Capacitor Loaded Shortened Dipole Antenna
Space is often a premium for radio amateurs, but you don’t have to sacrifice performance to enjoy HF bands. The capacitor-loaded shortened dipole antenna, popularized by G7UNF, is a compact, multi-band antenna design that uses a center-mounted adjustable capacitor to tune resonance across several amateur radio bands. This post explains how the antenna works, gives […]
HF Delta Loop Antenna
The delta loop antenna represents one of the most versatile and efficient antenna designs for HF amateur radio operations. This triangular closed-loop antenna configuration offers excellent performance characteristics while maintaining relatively simple construction requirements. Understanding the fundamental principles, design considerations, and performance characteristics of delta loop antennas is essential for amateur radio operators seeking to […]
H.J. Berndt’s Firmware for the ATS-Mini DSP Radio
A deep dive into H.J. Berndt’s alternative firmware for the ATS-Mini. Learn about the new UI, AFC improvements, and how to flash this powerful update to your DSP receiver.
Hydra SDR RFOne Faces Criticism Over Performance Issues
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, […]
ATS Mini V3S Officially Launched: Battery Drain Issue Finally Fixed
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 […]
The Simple RF Indicator: A DIY Tool for Detecting RF Signals
The image depicts “Simple RF Indicator,” passive device for detecting radio frequency (RF) signals in coaxial cables. It’s a clever hack using basic components
RadioSport SDR v1.7 Adds Crucial FM RDS Functionality
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 […]
NOAA’s POES Satellites Approach Final Decommissioning Amid Delays and Community Nostalgia
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 […]