Good night, stephan94
Before I forget, I want to ask you to use the latest version of IQmonitor Pro and demonstrate the StreamReader.ini parameters in StreamReader.log
This is not a whim, but a statement of the fact that after changing the StreamReader API, only IQmonitor Pro can work with both old and new versions of StreamReader
Now to the point of your question.
I repeated your experiment with the same frequency settings as yours. I used the Hot Bird as the source of the RF signal. According to the parameters of the transponders, they can be identified on RF (grey scale) frequencies.
In order for this scale to be inverted relative to the frequency scale that the antenna receives, it is necessary that the LNBStk<Lo parameter in StreamReader.ini
As experiments show, everything works correctly.
Success and health