A QSL card is a written confirmation of a two-way radio communication between amateur radio operators. It typically includes details such as the call signs of both operators, the date and time of the contact, and the location of each station. These cards serve as a tangible record of radio contacts and are often collected by enthusiasts. Amateur radio operators use QSL cards to verify their communications for awards and personal records. The cards can be exchanged via mail or electronically, and they often feature unique designs that reflect the operator's personality or interests, making them a cherished part of the hobby.