"Mil Cuatro Cuarenta" and a program announcement. This didn't sound like anything else I'd heard on 1440, so I sent a clip to Henrik Klemetz for his opinion. And Henrik didn't let me down. He got the name of the program, and through this he found that the station most probably was Radio General Obligado in Reconquista, Provincia de Santa Fé. This was confirmed tonight in a brief email from Edgado Sacuedo, Gerente.
Radio General Obligado was heard again on July 9, with a full ID and with a better signal.