https://cwsignals.com/flashcards

This project began as a lexicon of CW prosigns, Q-signals, and abbreviations. This lexicon is still under development. When it is finally released, I hope it will serve as a living repository of CW past, present, and future. By providing a definitive, source-traceable reference for the procedural vocabulary of radiotelegraphy, this lexicon consolidates the fragmented record left by the dispersion of knowledge across decades-old manuals, ITU documents, and amateur radio publications.