RTL-SDR, which stands for Realtek Software Defined Radio, is a popular and affordable hardware platform that allows enthusiasts, hobbyists, and professionals to explore the world of software-defined radio. It utilizes inexpensive USB dongles originally designed for digital TV reception and repurposes them as versatile radio receivers. RTL-SDR devices can tune into a wide range of frequencies, from the electromagnetic spectrum used for FM radio and TV broadcasts to various wireless communication signals, including amateur radio, aircraft tracking, weather satellites, and more. This accessibility and adaptability make RTL-SDR a valuable tool for learning about radio technology, signal processing, and exploring the signals that surround us in the modern wireless world.
What I see in Nature is a magnificent structure that we can comprehend only very imperfectly, and that must fill a thinking person with a feeling of humility This is a genuinely religious feeling that has nothing to do with mysticism.