MAR DEL PLATA, Argentina (Reuters) — Missing Argentine submarine ARA San Juan still has not sent any signals back and remains out of contact, according to Gabriel Galeazzi, spokesman for the Argentine Navy. The search for the missing submarine has not gone well, said Galeazzi, as he confirmed that all seven formerly-received signals were not in fact from ASA San Juan. “Communication satellite companies analyzed a spectrum of more than 400 satellite calls’ signals, and […]