On 2017-04-20 at 12:09 utc and 12:21 utc, while activating "Kornberg", DM/BW-094, the wrong reference has been spotted on SOTAwatch.
This was most likely due to my early appearence on the summit. Conditions were much better than expected. Hence I arrived 1 h 21min in advance of my estimation.
If you worked me BEFORE 11:00 utc it was on DM/BW-664
If you worked me AFTER 12:00 utc it was on DM/BW-094
Sorry for the trouble and thanks to SM0CUH who informed me!
73, Roman - DL3TU