{"title":"AT&T的成功商业计划","authors":"Viktor Pestrikov","doi":"10.29039/2587-9936.2023.06.3.25","DOIUrl":null,"url":null,"abstract":"It is shown that AT&T’s purchase of patent rights to his audion from Lee de Forest in 1912 made the New York – San Francisco transcontinental telephone line project a realty. The features of the construction of this telephone line and the difficulties that arose in this case are considered. Attention is paid to the development of electrical circuits and designs of tube repeaters, as well as their installation on a telephone line. The principles of operation of tube repeaters of type 21 and 22 are analyzed. The results of the first testing of the line on July 29, 1914 are given. A memorable day was marked on January 25, 1915 – the day of the solemn launch of the transcontinental telephone line into commercial operation 25 days before the opening of the Panama-Pacific International Exhibition in San Francisco.","PeriodicalId":117144,"journal":{"name":"Infocommunications and Radio Technologies","volume":"30 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Success Business Plan for AT&T\",\"authors\":\"Viktor Pestrikov\",\"doi\":\"10.29039/2587-9936.2023.06.3.25\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"It is shown that AT&T’s purchase of patent rights to his audion from Lee de Forest in 1912 made the New York – San Francisco transcontinental telephone line project a realty. The features of the construction of this telephone line and the difficulties that arose in this case are considered. Attention is paid to the development of electrical circuits and designs of tube repeaters, as well as their installation on a telephone line. The principles of operation of tube repeaters of type 21 and 22 are analyzed. The results of the first testing of the line on July 29, 1914 are given. A memorable day was marked on January 25, 1915 – the day of the solemn launch of the transcontinental telephone line into commercial operation 25 days before the opening of the Panama-Pacific International Exhibition in San Francisco.\",\"PeriodicalId\":117144,\"journal\":{\"name\":\"Infocommunications and Radio Technologies\",\"volume\":\"30 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-08-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Infocommunications and Radio Technologies\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.29039/2587-9936.2023.06.3.25\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Infocommunications and Radio Technologies","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.29039/2587-9936.2023.06.3.25","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
It is shown that AT&T’s purchase of patent rights to his audion from Lee de Forest in 1912 made the New York – San Francisco transcontinental telephone line project a realty. The features of the construction of this telephone line and the difficulties that arose in this case are considered. Attention is paid to the development of electrical circuits and designs of tube repeaters, as well as their installation on a telephone line. The principles of operation of tube repeaters of type 21 and 22 are analyzed. The results of the first testing of the line on July 29, 1914 are given. A memorable day was marked on January 25, 1915 – the day of the solemn launch of the transcontinental telephone line into commercial operation 25 days before the opening of the Panama-Pacific International Exhibition in San Francisco.
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