File:Bell telephone magazine (1922) (14776269203).jpg

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English:

Identifier: belltelephonemag13amerrich (find matches)
Title: Bell telephone magazine
Year: 1922 (1920s)
Authors: American Telephone and Telegraph Company American Telephone and Telegraph Company. Information Dept
Subjects: Telephone
Publisher: (New York, American Telephone and Telegraph Co., etc.)
Contributing Library: Prelinger Library
Digitizing Sponsor: Internet Archive

View Book Page: Book Viewer
About This Book: Catalog Entry
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Text Appearing Before Image:
irection. These pairs are not arranged for phantom use, asare the other cable circuits, and they are so located in the coreof the cable that interference between circuits is reduced to aminimum. The circuits are loaded with special loading coilsdesigned for broadcasting purposes. These coils are placed at3,000 foot intervals, whereas the usual type of loading coilsused on the same cables are placed at intervals of 6,000 feet.While the manufacturing cost of the individual loading coildesigned for broadcasting purposes is not greatly different fromthe cost of coils used for message circuits, the installed cost ofthe system is considerably greater. Twice the number of coilsis used and they are installed in small special cases each con-taining six coils for equipping the six specially provided cablepairs. The use of these circuits for message purposes, while phys-ically possible, would not be economical, as the conductors areof larger gauge than would be provided for message circuits, 108
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'
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https://www.flickr.com/photos/internetarchivebookimages/14776269203/

Author

American Telephone and Telegraph Company;

American Telephone and Telegraph Company. Information Dept
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(Reusing this file)		 At the time of upload, the image license was automatically confirmed using the Flickr API. For more information see Flickr API detail.
Volume
InfoField
13
Flickr tags
InfoField
Flickr posted date
InfoField
27 July 2014


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18 October 2015

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current02:00, 17 September 2016Thumbnail for version as of 02:00, 17 September 20162,816 × 1,710 (1.12 MB)SteinsplitterBot (talk | contribs)Bot: Image rotated by 90°
14:32, 18 October 2015Thumbnail for version as of 14:32, 18 October 20151,710 × 2,818 (1.11 MB)Fæ (talk | contribs)== {{int:filedesc}} == {{information |description={{en|1=<br> '''Identifier''': belltelephonemag13amerrich ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&fulltext=Search&search=insource%3A%2Fbelltelephonemag13amerric...

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