Abstract
THE broadcasting station LS-1, belonging to the municipality of Buenos Aires and situated about 20 miles from the city, has recently been re-equipped and is now one of the most powerful in South America. The antenna is the tallest vertical broadcast radiator in South America, being 778 feet high. It uses the new shunt excitation method developed by the Bell Telephone Laboratories, a full description of which is given in their quarterly Journal of July. The ground system consists of 120 buried radials, each 670 feet long, with an equal additional number of radials each 280 feet in length. Power is fed on to the antenna system through a 62-ohm nitrogen gas filled, concentric copper tube transmission line, 640 feet long. The station is operated under the administration of the Colon Theatre of Buenos Aires, which is one of the world's finest opera houses, where many of the world's leading artists are heard each season. There are 16 hours of transmission daily, with a varied programme of widely international flavour and cultural and educational subjects. Its main feature is the complete transmission of the opera and other musical activities of the Colon Theatre. The Colon season was officially opened this year by the President of the Republic on May 23, and can now be heard by the great majority of the population of Argentina as well as by listeners in Chile, Uruguay and southern Brazil. A wide repertory of classic Italian, German and Russian opera has been presented in addition to a few modern Argentine works. The new studios are built below ground-level and close to the Colon Theatre and are completely sound insulated. From the broadcasters' point of view the economy and ease of operation have set up new standards. The audio-frequency response does not vary more than one decibel between 30 and 10,000 cycles. The audio-distortion is less than 5 per cent even at complete modulation. Provisions have been made for increasing the output of the 50 kilowatt transmitter to 500 kw. by the addition of a 500 kw. amplifier. The results obtained have more than equalled expectations.
Article PDF
Rights and permissions
About this article
Cite this article
Broadcasting Station LS-1, Buenos Aires. Nature 142, 507 (1938). https://doi.org/10.1038/142507a0
Published:
Issue Date:
DOI: https://doi.org/10.1038/142507a0