Thanks Raj
it's the first thing I did! I checked all the connections!
By turning the VFO, the QRM increases on some frequencies but no QSO is heard. But stopping on one of these frequencies, if you remove the antenna the QRM should go to zero but instead it does not change anything! it's as if the antenna is not connected! I checked the antenna line up to the first transistor, passing through the relays and the frequency coils and everything is OK! See the attached diagram! I checked the one marked in yellow!
Thank you
Sergio
