QSL card

A QSL card is sent by mail to confirm radio communication. Today, this is usually used by amateur shortwave/ham radio operators. QSL is code for "I confirm receipt of your transmission". In the past, they were also sent to acknowledge signal reception of commercial broadcast stations.

The cards are postcard size allowing them to be easily mailed. QSL cards typically include the operator's call sign and other data, and can be plain but often are printed in a decorative style. Thus, the cards make an interesting collection aside from being a contact record. Today, the confirmation can just be a message sent via the internet.

 File:IRC US.jpg|IRC from the US. Note country designation, price indicated and 1947 postmark. As always, click on the images here for a bigger view.File:WEFCorshamG2UV.jpg|1925 card from an amateur shortwave operator in Great Britain.

