13 Colonies QSO Party

https://www.13colonies.us/ is the official website for the Annual 13 Colonies Special Event, one of the most popular summer activities in the amateur radio (ham radio) community.
​Held every year during the week of Independence Day (July 1 to July 7), the event celebrates US history and independence.
​How the Event Works
​The Core Stations: Special amateur radio stations set up in each of the original 13 colonies. They use unique, sequential call signs ranging from K2A through K2M.
​The Bonus Stations: Operators can also track down special bonus stations representing key historical roles, such as WM3PEN (Philadelphia/Liberty Bell), GB13COL (Great Britain), and TM13COL (France).
​The Objective: Ham radio operators and shortwave listeners (SWLs) worldwide try to find and contact these stations across various radio bands and modes (such as voice, Morse code, or digital modes).
​The "Clean Sweep": Contacting all 13 colony stations plus the bonus stations is highly competitive and referred to by the community as achieving a "Clean Sweep."
​What the Website Offers
​The site serves as the central hub for the event where participants can:
​View current event dates, official rules, and active radio bands.
​Look up details for individual state coordinators and active call signs.
​Request official, collectible QSL cards (confirmation postcards) or beautifully designed historical certificates confirming their contacts after the event ends.