Mysterious issue/phenomena with connectors/Pi/Prostick

[LawrenceHill]

@criceto2

If I make micrometric movement going OUT from female connector (prostick plus side), I find a right position where air traffic signals are received

You are suffering from too much signal overloading your dongle.
When you unscrew the connectors you are introducing attenuation and no longer overloading things.
You probably need to reduce the gain of your receiver and more than likely will need to use a filter.
It’s a long thread but see:

Do I Need A Filter?

The space around ADS-B antenna contain not only 1090 MHz signals, but also lot of other signals at different frequencies. The closer the frequency of a signal to 1090 MHz, your ADS-B antenna picks it stronger. For example if there are three signals of equal strength, one at 144 MHz, 2nd at 850 MHz and 3rd at 950 MHz, the ADS-B antenna will pick 950 MHz one the strongest, 850 MHz one a bit less stronger, and 144 MHz one much fainter. As the Cell/Mobile/Pager signals exist in the range 850 MHz to…