Hi horn3t
"tested now changing pci express x1 (mini) slot to other pci express x16. Today is rainy, signal is lower 79%-81% and at this moment no errors. " in theory ,you install the card in PCIEX1 or PCIEX16 are no difference! But because of the difference of board production ,between them also will be a little different. as SergioDanielG said:"The rain affect all signals. " , ''Signal strength is about 99% and quality 83% in good wheather conditions. (windy or cloudy wheather is not a problem)." the Card working well in good weather,so I think the card is not broken,In the same condition ,good weather and bad weather change is signal!
Thanks!!