"QSL cards confirm either a two-way radiocommunication between two amateur radio stations or a one-way reception of a signal from an AM radio, FM radio, television or shortwave broadcasting station. They can also confirm the reception of a two-way radiocommunication by a third party listener. A typical QSL card is the same size and made from the same material as a typical postcard, and most are sent through the mail as such." Here's a substantial collection of them.
posted by dersins on Oct 7, 2009 - 43 comments

Slats.org's awesome gallery of QSL cards. QSL cards were like business cards for ham radio and CB nuts. They'd hand them out and trade them with other operators and featured their location and contact info. Bighappyfunhouse bought a boatload at a swapmeet and scanned them in. Great, crude, amusing, folksy art from a bygone era. [via projects]
posted by mathowie on Oct 15, 2007 - 13 comments