Thanks Ron
Now The constellation at the exit of demod reference signal now locks .
The duration of the file is 4 minutes fifty seconds 290 seconds. The four cores work almost 100%
At the moment I have not got a TS file at the exit that have content
A question could now be:Why a file created with gqrx from a real signal does not lock?
The only difference I see at a glance between a file created by gqrx and the one you send me is that yours has a much greater relation C/N that mine.
Best regards