NMSAT :: Networked Music & SoundArt Timeline

1907 __ Speech transmission
Joseph Murgaš (1864-1929)
Comment : Rev. Joseph Murgaš (born in Slovakia in 1864) is able to transmit speech from his experimental station in Wilkes Barre, Pennsylvania.Due to permanent conflicts with the bishop's secretary, Murgaš had to emigrate to the United States in 1896, where he was assigned a Slovak parish in the city of Wilkes-Barre, Pennsylvania. Having no possibility for painting, he started to deal with natural sciences again, especially electrotechnology. He established a laboratory in Wilkes-Barre, in which he primarily investigated radiotelegraphy. His article in the Tovaryšstvo magazine of 1900 shows that his radiotelegraphy studies had achieved a high level. In 1904, he received his first two US patents: the Apparatus for wireless telegraphy and The way of transmitted messages by wireless telegraphy. Further 11 patents followed between 1907 and 1911. Based on the first two patents, he created the Universal ether Telegraph Co., which organized a public test of Murgaš's transmitting and receiving facilities in September 1905. The test was successful, but a storm destroyed the antenna masts three month later, which led to a dissolution of the company. In 1905, Murgaš achieved radio transmission between Wilkes-Barre and Scranton, Pennsylvania, or a distance of 20 miles (30 km). Other important specialists also attempted to carry out such transmissions at that time. Guglielmo Marconi and other researchers (for example Reginald Fessenden), however, were not able to perform satisfactory wireless information transmission above Earth's surface. The reason why Murgaš was more successful then the others was that he invented the so-called tone system which diminished the time needed to deliver a signal and thus considerably improved the system of wireless telegraphy used until then. The tone system is the use of two signals of different frequencies, i.e. Murgaš substituted the "dot" of the Morse code with a higher tone and the "comma" with a lower tone (this is the 1904 patent "The way of transmitted messages by wireless telegraphy"). Thomas Edison paid remarkable attention to Murgaš' experiments and he is said to have informed G. Marconi of Murgaš' success. Murgaš' lab in Wilkes-Barre was visited by President Theodore Roosevelt in 1905. (Compiled from various sources)
Urls : http://www.wvwspartans.org/Murgas/ (last visited )

No comment for this page

Leave a comment