A QSL card is a written confirmation of a two-way radio communication between amateur radio operators. These cards typically include details such as the call signs of both operators, the date and time of the contact, and the location of each station. They serve as a way for operators to verify their communications and can be collected as a hobby. QSL cards are often exchanged to confirm contacts made during radio contests or special events. Many operators enjoy designing unique cards that reflect their personality or interests. Collecting QSL cards can also be a way to track achievements in the amateur radio community.