Antenna phasing is used for ham radio beamforming and shortwave listening, especially on the lower bands where conventional beams are not feasible. Read more
Ham Radio Beamforming with Phased Arrays
Author: John VE6EY
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
Next Generation SDR Interference Reduction
Next generation SDR interference reduction should be tackled by Spatial Interference Filtering Techniques. Here is why and how. Read more
Recording SmartSDR IQ Data with Audacity
Let’s get started recording SmartSDR IQ Data with Audacity. This lets you convert the 24 bit Flex data stream down to 16 bits for use with the File Source in GNURadio. Read more
GNURadio Envelope Detector in Python
Here is a simple demonstration of using embedded Python to write a GNURadio AM Envelope Detector and explore its performance with various signals. Read more
SM2BYC Remote SDR with Directional Antennas
Here is a special feature about my favorite remote listening site, the SM2BYC Remote SDR available on the Internet. It even has low noise directional antennas for medium wave. 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
Medium Wave Split Channels – DX Helpers
Local AM broadcasters operate on different channels in the Americas than in the rest of the world. These Medium Wave split channels are a boon for serious DX’ers. Read more
Modulation Dependent Carrier Level Methods
Today’s AM broadcasters reduce carrier level to save money on their power bills. Here is a summary of the modulation dependent carrier level methods. Read more