Links to helpful websites:
Amsat — Amateur Radio in Space
North America chapter: http://amsat.org
United Kingdom chapter: http://amsat-uk.org
Germany chapter: http://amsat-dl.org
Amsat CubeSat Simulator: http://cubesatsim.org/
Cal Poly CubeSat Lab: http://cubesat.org
European Space Agency CubeSat Program: https://www.esa.int/Enabling_Support/Space_Engineering_Technology/Technology_CubeSats
Gunter’s Space Page contains details on almost all spacecraft, satellites and launches: https://space.skyrocket.de/
Hack-A-Sat was a DEF CON 28 challenge during the summer of 2020. The challenge is over, but the code and reference library is posted on Github. Follow this link for more information: https://www.hackasat.com/keep-learning
International Amateur Radio Union coordinates the radio frequencies used by most educational cubesats. Links of this page provides a cubesat catalog and description of each: http://www.amsatuk.me.uk/iaru/index.php
Nanosats Database: https://www.nanosats.eu/
NASA CubeSats Program https://www.nasa.gov/mission_pages/cubesats/index.html
SatNOGS: Open Source global network of satellite ground-stations http://satnogs.org
Fredric Raab 