Regarding Observation 5441929 …
This is the voice contact of astronaut Matthias Maurer answering in German to the questions in the ARISS school contact with the Gewerblichen Schulen Donaueschingen (Gewerbliche Schulen Donaueschingen - Willkommen bei den Gewerblichen Schulen Donaueschingen) , Donaueschingen Germany as directly received on 145.800 MHz in FM on my SatNOGS station.
The ISS callsign is DPØISS with astronaut Matthias Maurer KI5KFH.
Groundstation (no audible) is DN2FIS.