My grandpa was really into amateur radio, he still gets postcards from NASA when he pinged the ISS unannounced. https://www.csmonitor.com/1982/1202/120236.html

My grandpa was really into amateur radio, he still gets postcards from NASA when he pinged the ISS unannounced. https://www.csmonitor.com/1982/1202/120236.html https://www.csmonitor.com/1982/1202/120236.html