File:US Army Signal Corps AN-TRC-1, 5, 6, & 8 microwave relay station 1945.jpg
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[edit]DescriptionUS Army Signal Corps AN-TRC-1, 5, 6, & 8 microwave relay station 1945.jpg |
English: A US Army Signal Corps transportable microwave relay station from 1945 using AN/TRC-1, 5, 6, and 8 systems. Each pair of identical antennas is used for a link with another station up to 40 miles away, which can carry multiple telephone calls. Two antennas are required for bidirectional communication; one for transmitting and one for receiving. Microwave technology advanced during World War 2 due to the development of radar, and toward the end of the war the US Army began using microwave communication systems in the European theater. These military systems were some of the first practical microwave relay systems and presaged development of the great transcontinental commercial microwave relay networks in the 1950s. The systems shown here were:
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Date | |
Source | Retrieved November 2, 2015 from "Directional Radio Relays" in Popular Science magazine, The Popular Science Publishing Co., New York, Vol. 148, No. 1, January 1946, p. 188 on Google Books |
Author | Credited to US Army Signal Corps |
Licensing
[edit]Public domainPublic domainfalsefalse |
This file is a work of a U.S. Army soldier or employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.
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current | 04:27, 16 March 2022 | 2,044 × 1,246 (896 KB) | Mozillaman (talk | contribs) | Retrieving higher quality capture from source. | |
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Orientation | Normal |
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Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Pixelmator Pro 2.3.5 |
Date and time of digitizing | 21:21, 15 March 2022 |
Color space | sRGB |
Date metadata was last modified | 14:26, 15 March 2022 |
IIM version | 2 |