The amateur satellite AO-7 was launched on November 15th, 1974. It was thought to be lost for years, until recently when chemistry changes in the batteries increased the resistance so that now when the satellite is in sunlight, its transponder is directly powered by its solar panels. While reading a post to the AMSAT-BB today, I found the following website which I hadn’t seen before. It has information on operating the satellite, and logs traffic to the satellite. Very cool.