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The digital television transition, also called the digital switchover (DSO), the analogue switch/sign-off (ASO), the digital migration, or the analogue shutdown, is the process in which older analogue television broadcasting technology is converted to and replaced by digital television.
Tactical Single-Channel Radio Communications Techniques (FM 24-18), Headquarters Department of the Army, Washington D.C. 30 September 1987. Radio Operator's Handbook (FM 24-19) , Headquarters Department of the Army, Washington D.C. 24 May 1991.
The digital television transition in the United States was the switchover from analog to exclusively digital broadcasting of terrestrial television programming. It was originally set for December 31, 2006, but was delayed several times due to multiple government acts being enforced on broadcasting companies.
By the end of the year, Radio Chicago was closed; this included the State-Street primary school and all of Pre-Radio Schools (review topics and the slide-rule were added to the curriculum of the remaining primary schools). The primary school at Gulfport closed in March 1946, and the base was decommissioned.
FCC amateur radio station license of Al Gross. In the United States, amateur radio licensing is governed by the Federal Communications Commission (FCC). Licenses to operate amateur stations for personal use are granted to individuals of any age once they demonstrate an understanding of both pertinent FCC regulations and knowledge of radio station operation and safety considerations.
The organization that led to the Military Auxiliary Radio System was called the Auxiliary Amateur Radio System (AARS). AARS was created in November 1925 by a few dedicated pioneers in the United States Army Signal Corps led by Captain Thomas C. Rives. The United States recognized radio as a critical mode of communication during World War I.
In United States military communications systems, commercial refile refers to sending a military message via a commercial communications network. The message may come from a military network , such as a tape relay network, a point-to-point telegraph network, a radio-telegraph network, or the Defense Switched Network .
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