waves. The apparatus takes different names according to the effect produced. In the first instance it is called 'The Esophone', in the second 'The Photophone', and in the third 'The Radiographone'. The working distance of the first is at least 4 or 5 miles; of the second from 5 to 7 miles and of the third from 10 to 15 miles. These potentialities of sending and receiving can be increased in the first case by augmenting the proportions of certain parts; in the second case by communicating greater intensity to the luminous focuses, and in the third case by using a more powerful Ruhmkorff coil... When the wind is contrary or the distances impede the effects of the Esophone, we can use the Photophone, and when tempests or distances do not favor the working of the Photophone, we can use the Radiographone." Ultimately, Landell was issued three U.S. patents covering his work: Patent no. 771,917, , issued October 11, 1904 for an application filed February 9, 1903 (serial no. 142,440). This was for a dual-use transmitter, capable of making audio transmissions by both the photophone method and via electro-magnetic radiation (radio waves). In the patent, Landell noted that: "It will be observed that the most important feature of my invention consists of the employment of a make-and-break transmitter worked by sonorous vibrations, causing transmitted electro-magnetic or light waves to correspond closely to the sound-waves by which they are produced." Patent no. 775,337, , issued November 22, 1904 for an application filed October 4, 1901 (serial no. 77,576). This primarily describes a photophone configuration, for which "clear actinic light is absolutely necessary". It also included the "compulsor" fan described in the Brazilian patent. Patent no. 775,846, , issued November 22, 1904 for an application filed January 16, 1902 (serial no. 89,976). This patent also primarily covered transmissions. It included a Crookes tube, whose "cathode-rays, like the actinic and the etheric waves, above described, apparently reinforce each other in their effects, and the result is that the telegraph is more effective when both are employed". Reconstructions In 1984, Porto Alegre's Fundação de Ciência e Tecnologia rebuilt the Wave Transmitter patented in 1904 in the United States. The tests were successful in transmitting over a wide frequency range and over distances of up to 50 meters. The technicians assume that at the time of the priest the distance could have been much greater,