QSL cards are used as hard-copy evidence of receiving a fellow wireless radio enthusiast’s signal. Get it? Me neither. There’s a great Wikipedia article on the subject, but I’m just fascinated by the QSL cards. Here are a few from my collection:
Some wireless inspiration:
Here’s a great French site with a few thousand QSLs. My favorites are those from French-occupied North Africa.
My dad has been a ham radio operator since the early 1960s and has a great collection of these beauties. I think they’re such a nice way to confirm signal reception.
My grandfather used to do that with King Hussein from Morocco. I’ll ask if he still has that card