I just made some more experimentes with my (not used) pca tuner module. It's one with the reception problem. All this have been done on my desk and not in the car:

- If I completly remove the positive antenna connector directly on the soldering point I have no reception at all. 0 out of 7 bars. No sound. (There is one station with a very strong reception. Tuned to this station I have 2 out of 7 bars. Sound is clear)

- As soon as I connect a short wire (in my case a screwdriver) to the antenna soldering point I have 7 out of 7 bars. Same behaviour for all frequencies, even if no station is broadcasting on that frequency. On a used frequency sound is ok, else I hear noise. (Same if I put a finger on the soldering point instead of the screwdriver)

pca, should I send the tuner back to you to have a look at it? At the moment I can't use it and I'm happy with the orginal tuner modul I also have. But in future I plan to sell one of them.

Should I make some other tests?