A QSO in ham radio is a communication or “contact” between two amateur radio operators using voice or Morse code. It can be a simple exchange of callsigns and signal reports, or a longer conversation about various topics. The term “QSO” comes from the Q code used in Morse code communication, specifically QSO meaning “I can communicate with … directly”. Ham radio operators often log their QSOs for personal records, to confirm contacts for awards or contests, or to contribute to scientific research.
