The German Navy is running a Link-16 exercise this week. Frequencies in use by Magic, Navy and others stations are:
234.0250 MHz = Autocat EW
280.0500 MHz = Autocat LC
283.4000 MHz = EW
283.9000 MHz = AW
292.1750 MHz = Autocat EW
359.1000 MHz = AW
372.3750 MHz = Autocat LC
You can receive a lot of interesting callsigns via Autocat.
Credits: Daan from Dutch Mil Research Group.