Bookmarked

Receiving SpaceX Falcon 9 telemetry with a HackRF
https://www.rtl-sdr.com/receiving-space-x-falcon-9-telemetry-with-a-hackrf-and-1-2m-satellite-dish/

A quick introduction to MQTT for IOT
https://michael.stapelberg.ch/posts/2021-01-10-mqtt-introduction/

Troll Research Station: How to operate an airport in Antarctica
https://www.flightradar24.com/blog/troll-research-station-how-to-operate-an-airport-in-antarctica/