Radio amateurs have been building and operating satellites for almost fifty years now, and we are aiming for more. In this talk, I'll present who AMSAT is, what we have achieved in the last fifty years, and what we are working on now. Back in the 1960's, radio amateurs seized the opportunity of launching a satellite into space. It would not be the only one; we are approaching OSCAR 70 now. Building satellites has always been challenging and involves using technology in creative ways. I'll cover some of the more fascinating cases, including some lessons learned during the process. In addition to the satellites in earth orbit, we are also aiming for Mars, and I'll show what are doing to get there.
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