These files are for FoxTelem, the AMSAT software by Chris Thompson AC3CZ/G0KLA for decoding and displaying Fox-1 series CubeSat telemetry. To use FoxTelem with the CubeSat Simulator, you will need to download the latest version number listed in this directory. https://www.g0kla.com/foxtelem/downloads/test/ Next, download the .MASTER files in the correct version number directory and put them in the FoxTelem spacecraft folder. Run FoxTelem, then go under Spacecraft/Add and select the .MASTER files to add the CubeSat Simulator to FoxTelem.