In analog radio communication—whether in amateur radio, commercial two-way radios, emergency services or industrial PMR/LMR systems—unwanted noise and co-channel interference have always been fundamental challenges. Traditional carrier-squelch circuits…
The Duga-3 over-the-horizon (OTH) radar—globally known as the “Russian Woodpecker” because of its distinctive 10 Hz tapping sound on shortwave radio—remains one of the most iconic, powerful and…
Australia has officially entered uncharted territory by becoming the first country to block social-media access for everyone under the age of 16. The unprecedented measure, which took effect…
In an age of digital communication, error correction, and smart radios, it might seem outdated—even strange—that the global aviation industry still relies on amplitude modulation (AM) for voice…