The article discusses how ham radio has evolved in the internet age with modern technology, globalization, and digital modes transforming the hobby. It covers advancements in radio equipment, digital modes, computer logging, and the changing perspectives within the ham radio community.
An open-source device, kv4p HT, connects to an Android smartphone and turns it into a radio transceiver for about $35. It uses an ESP32 and transmits one watt, featuring APRS and scanning capabilities. The PCB is simple and affordable with a 3D-printed case.
A simple explanation of waveguides, transmission lines, and related topics using real-world examples and minimal math.
