It seems like even small bumps in geomagnetic activity are ruining HF radio propagation for me this summer. Beware a K Index more than 2! Read more
Category: Shortwave Radio
Mysterious Radio Kuwait Fading
Digital broadcasting can provide excellent quality on shortwave. But recently I have discovered mysterious Radio Kuwait fading of some sort. Read more
Skywave Fading – Essential Shortwave Listening
Skywave fading is a fun “feature” of shortwave propagation. Take some time to examine the many fading effects you experience every day. Read more
HF Coastal Radar – Over the Horizon
You can easily receive HF coastal radar signals on your SDR, and sometimes even read the radar return signal under the right conditions. Read more
More About Beamforming – Questions and Answers
Let’s learn more about beamforming. We dig into some of the key assumptions and terminology, including the difference between time delay and phase shift. Read more
Understanding Beamforming – Proven for Decades
Understanding beamforming is actually quite simple. It used to be about analog delay lines. Now it’s just a matter of complex math in your computer. Read more
Shortwave Broadcasting Paradox in 2018
Shortwave broadcasting paradox: better, cheaper radios and few broadcast signals. Let’s enjoy the ones that remain. Read more
Implement Synchronous Detection – How It’s Done
So, how do you implement synchronous detection? Lots of ways, it turns out. Some work better than others across a spectrum of complexity. Read more
Understanding Synchronous Detection
To boost your understanding synchronous detection, let’s examine the impact of selective fading, distortion and weak signals on the AM detector in your receiver. Read more
Legacy AM Receivers – How Envelope Detection Works
Before we explore synchronous detection, let’s make sure we understand how envelope detection works. After all, it’s been around for a century. Read more