Open HamClock Backend offers a community server at ohb.hamclock.app:80 operated by radio amateurs in a UK datacenter, or users can self-host their own backend on minimal hardware like a Raspberry Pi 3B+.
SDR-- is an open-source software-defined radio application with a visual signal graph interface, Rust-based DSP server, and React web UI. It supports decoding AM, FM, SSB, and digital voice modes across aircraft, maritime, amateur, and sensor radio traffic, with features like spectrum analysis, recording, direction finding, and network-based control.
The Carterfone is a device invented by Thomas Carter that acoustically connects two-way radio systems to telephone networks, enabling radio users to communicate with phone users. The landmark 1968 Carterfone decision by the FCC allowed electrical connection of customer-owned devices to AT&T's network, establishing the principle of "any lawful device" and paving the way for answering machines, fax machines, and modems.
Trịnh Thị Ngọ (1931–2016), known as Hanoi Hannah, was a Vietnamese radio broadcaster who made English-language propaganda broadcasts for North Vietnam during the Vietnam War aimed at demoralizing US troops. She read casualty lists, played anti-war songs, and delivered messages designed to persuade American soldiers that US involvement was unjust, though few desertions resulted from her work.
TomatoVynl is a vinyl-inspired focus timer application featuring customizable work/break intervals, curated radio, ambient sound options, and a floating notes feature for task tracking during focus sessions.