Your SDR spectrum man-made noise is a constant and distracting companion. Some call it noise, but it is really interference from nearby electronic devices and appliances. Read more
Category: Radio
Geomagnetic Activity Effects HF Propagation
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
Understanding SDR Spectrum Noise Floor
Let’s find out what the SDR spectrum noise floor means and where it comes from. And, we’ll do some math, too! Read more
Translation Tool – Reading Swedish Radio Magazines
Using free translation tool, you can now read foreign radio magazines in your native language. I translated the Swedish radio experimenters magazine Resonans. Read more
Watching Radio Signals – Hobby Goes Visual
Previously, our interest was mainly listening to radio signals. Over the past fifteen years, though, we added watching radio signals in a big way. Read more
Faraday, Maxwell – Scientific Heroes Remembered
Take a moment to reflect on the 19th Century giants Faraday, Maxwell. These wonderful scientists laid the foundations for modern physics and our radio hobbies. Read more
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
Zynq Development Board Software Radio
Modern tools like the Zynq development board provide the opportunity to build complex radio gear with programmable hardware. GUI, control and demodulation can be coded into embedded operating systems. Read more