What about sending a repeater station once in a while to follow them? Or would it be inefficient compared to constantly updating radio tech here on Earth?
I have a generic English ASR model for ESPnet (https://github.com/espnet/espnet) trained on multiple various datasets and would be happy to provide it. If you send me few audio samples, I can give it a try. You can contact me pavel.denisov@gmx.de.