Each time I have done so much publicity that has me the "bitten" ...
This time by opening the box, I found that the potentiometer control knob was very degraded (broken, not the red cover ...) and the pieces were not in the box which proves that n is not a transport problem but quality assurance.
If I wanted the quality "made in china" I would have found cheaper
I am disappointed by the manufacturer, even if the station is working properly (for now ...)