.....and now all work perfectly!

The problem is the trasceiver is on......UCFG.3 = 1 solve all the problems!

I read the datasheet many time...but the solution is always..IN THE NEXT PAGE!

I take this opportunity to ingratiate your good work. I don't write to much on this forum, but I read carefully because I always (or almost) find the solution to my problems!
Darrel thanks for your excellent routines and your presence in this forum, skymask thanks for the excellent advice from this forum.

Paolo