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Schweitzer created the relay as a Ph.D. project while at Washington State University. He sold his first product, the SEL-21, to Otter Tail Power Company in Fergus Falls, Minnesota in 1984. Otter Tail initially used the SEL-21 for its fault location and event recording functions. In 1985, SEL built its first building and employed eleven people.
Trans Canada Microwave or Trans-Canada Skyway was a microwave relay system built in the 1950s to carry telephone and television signals from Canada's east coast to its west coast. Built across the nation, the towers ranged in height from nine metres high, to one in northern Ontario that was over 100 metres high.
Area codes 317 and 463 are telephone area codes in the North American Numbering Plan (NANP) for Indianapolis and nine surrounding counties in central Indiana. The numbering plan area (NPA) comprises all or parts of Marion, Boone, Hancock, Hamilton, Hendricks, Johnson, Madison, Morgan, and Shelby counties. 317 is the original area code of the ...
Toll-free and premium numbers. Non-geographic toll-free telephone numbers (800, 833, [ 3] 844, 855, 866, 877, 888) and premium-rate telephone numbers (900) are allocated centrally by the NANP Administrator. Calls to telephone numbers with the central office code 976 are billed as expensive premium calls.
List of device numbers and acronyms. 1 - Master Element. 2 - Time-delay Starting or Closing Relay. 3 - Checking or Interlocking Relay, complete Sequence. 4 - Master Protective. 5 - Stopping Device, Emergency Stop Switch. 6 - Starting Circuit Breaker.
In Canada and the United States, the telephone number 711 is used for the Telecommunications Relay Service. In the U.S., every phone company is required to connect persons who dial 711 to a TRS call center from a working number. [10] In July 2007, the Federal Communications Commission ruled that the 711 requirement extended to VOIP telephony. [11]
The 317 and 463 area codes covers the Metro Indianapolis area. The counties covered by 317 are Boone County, Hancock County, Hamilton County, Hendricks County, Johnson County, Marion County, Morgan County and Shelby County. 317 covered all of Northern and Central Indiana until 1948, when 219 was created. Central Indiana remained under the 317 ...
The Olympic torch relay is the ceremonial relaying of the Olympic flame from Olympia, Greece, to the site of an Olympic Games. It was introduced at the 1936 Summer Olympics in Berlin , as a way for Adolf Hitler to highlight the Nazi claim of Aryan connections of Germany to Greece. [ 1 ]