Over on his YouTube channel Aaron who created and maintains the DragonOS SDR Linux distribution, has uploaded a video demonstrating how to use an RTL-SDR and SoftEOT/PyEOT to decode North American wireless train telemetry.
HOT (Head of Train), EOT (End of Train) and DPU (Distributed Power Unit) telemetry is sent from various parts of a train and contains information about things like voltages, brake line pressure and to monitor for accidental separation of the train.
In his video Aaron uses his DragonOS Linux distribution, SDR++ with an RTL-SDR Blog V4 dongle and the SoftEOT and SoftDPU decoders. SoftEOT and SoftDPU are both Windows programs, however Aaron shows how to use WINE to run them in Windows. Later he shows how to use an alterative decoder called PyEOT which is based on GNU Radio.