CB76 Radio Cooperativa was heard on July 31, and my reception was most kindly confirmed by my good friend Pablo Phillips:
"Indeed, the signal you recorded corresponds to our AM station in Santiago. We broadcast with a 50 KW solid state Nautel transmistter. The antenna is a single 156 meter vertical mast. In this mast our station and Radio Nuevo Mundo station that transmits in 930 KHZ are duplexed".
And there was more to come from this fascinating DX target the next days ..!