The transmission continued for about three hours and was received as far as Santos in Brazil, where it was picked up by a ship's radio operator. The number of listeners was limited, since the crystal set radios used at the time were rare and difficult to operate, requiring tedious fine-tuning of a lead glass crystal and installation of a wire antenna several meters long. But the newspaper La Razón published a raving review, and even president Hipólito Yrigoyen commended Susini and his group for their accomplishment.