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American Signal Corporation (ASC) is an outdoor warning siren and mass notification company in the United States. ASC was founded in 1873 as Biersach and Niedermeyer (B&N) . After performing poorly, the company reformed as Alerting Communicators of America (ACA) in 1968, and expanded the line of warning systems they produced.
The United States Army Signal Corps ( USASC) is a branch of the United States Army that creates and manages communications and information systems for the command and control of combined arms forces. It was established in 1860, the brainchild of Major Albert J. Myer, and had an important role in the American Civil War.
This siren is similar to Federal Signal's Thunderbolt series. Only a single unit remains in service in Milwaukee, WI. Screamers Electro-Mechanical 2, 5, 7.5, 10 8, 9, 9/12, 10/12 1968–1994 Omni Directional 102–115 dB at 100 ft. Series of small vertical sirens, comparable to Federal Signal Corporation's vertical sirens. Sentry 95
The Marconi Wireless Telegraph Company of America (commonly called American Marconi) was incorporated in 1899. It was established as a subsidiary of the British Marconi Company and held the U.S. and Cuban rights to Guglielmo Marconi 's radio (then called "wireless telegraphy") patents. American Marconi initially primarily operated high-powered ...
U.S. Army Signal Corps station on Elk Mountain, Maryland, overlooking the Antietam battlefield.. The Signal Corps in the American Civil War comprised two organizations: the U.S. Army Signal Corps, which began with the appointment of Major Albert J. Myer as its first signal officer just before the war and remains an entity to this day, and the Confederate States Army Signal Corps, a much ...
Major General Jens A. Doe. The 41st Infantry Division was an infantry division of the United States Army National Guard composed primarily of units from the Pacific Northwest. The division saw active service in World War I and World War II, receiving the nickname “Jungleers” during the latter. Organized in 1917 after the American entry into ...
Signal is an encrypted messaging service for instant messaging, voice calls, and video calls. [ 14][ 15] The instant messaging function includes sending text, voice notes, images, videos, and other files. [ 16] Communication may be one-to-one between users or may involve group messaging. The application uses a centralized computing architecture ...
The Signal Intelligence Service ( SIS) was the United States Army codebreaking division through World War II. It was founded in 1930 to compile codes for the Army. It was renamed the Signal Security Agency in 1943, and in September 1945, became the Army Security Agency. [1] For most of the war it was headquartered at Arlington Hall (former ...