Since they returned from a deployment in Poland in July 2018 they hide several machines (flying at the same time) behind a single hex code. They can only distinguished by callsign, it seems to change each second but it's due to their use of a single hex code for more than one machine. It seems they don't want to be scrutinized their daily training flights in this part of Germany. There are many observers in this area with the most fighter jet noise in Germany. Official numbers für 2017: 788 hours of training space use (which means 788 hours with up to 12 fighter jets at once). Examples: fluglaerm-kl.de/aktuelles_einzeln.php?artikel=201808142400 (see the entries with 000017) They do it with 000016 as well: fluglaerm-kl.de/aktuelles_einzeln.php?artikel=201808072400
Bundeswehr does it too. And many more "tricks". In ED-R 401 MVPA NE. Just as much fighter jet noise as in your area. Just no official data, like in your zone. And not as good MLAT covergae via ADSBx as in TRA Lauter.
I never saw that several airborne from the German Air Force jets use the same hex code at the same time. They have another hobby: changing their hex codes frequently. In ED-R205/305 we have since june 2016 ... - 512 different hex codes for Tornados - 278 different hex codes for Eurofighters
I would like to know how they managed it, but there is a public site which always shows the most current hex codes: http://www.scannernet.nl/luchtvaart/militaire-luchtvaart login: Scannernet pw: VRS1 Scroll down to the middle of the page.
