On Wednesday, April 15th I was actually on DM / NS-117 and NOT on DM / NS-177 again. I mixed up my spot and haven’t noticed it yet. Please check this in your log and excuse me.
Thanks for the tip from Markus IN3ADF. The mountain played the second trick on me. The last time I activated it with 0 qsos my antenna was defective and now I have mixed up the reference.