Okay, with the suggestion of JP I have been modified the LO ref. The procedure that I have been used is to, increase and decrease, by some try, the main frequency. I found good rx at 333 K/s decreasing 40 KHz. This difference is now applied to the LO, in main screen. Inserting now the real frequency (From BATC Spectrum WB) the Minitioune locks the signal. Now I will need to try with more lower rates.
More test will be done. Stay tuned.