
Station 8MK in Detroit, the First Radio Station Owned by a …
On August 31, 1920 the first radio news program was broadcast by station 8MK in Detroit, Michigan. The station, owned by The Detroit News newspaper, which was owned by E.W. …
WWJ (AM) - Wikipedia
On the air for over a century, WWJ began daily broadcasts as the "Detroit News Radiophone" on August 20, 1920, while it operated under an amateur radio license with the call sign "8MK". …
31st August 1920: World's first radio news program begins ... - YouTube
That evening, at 8:10pm, 8MK broadcast the returns from one of Michigan’s primary elections that had taken place that day, firmly establishing it as the world’s first radio news program. The...
First commercial radio station in U.S. begins operating in Detroit …
(Friday, August 20, 1920) — The first commercial radio station in the United States, 8MK, began operations today in Detroit. It was owned by William E. Scripps, owner of The Detroit News, …
8MK Articles (1920) - Early Radio History
Although the Detroit News introduced its new broadcast service to its readers on August 31, 1920, the newspaper had begun test transmissions, working with local amateur radio enthusiasts, on …
WWJ in Detroit: A 2020 Centennial Station - Radio World
2020年9月11日 · Detroit News station WWJ began test broadcasts on Aug. 20, 1920 using call sign 8MK. A phonograph horn attached to the transmitter’s microphone is seen picking up …
无线电通信发展史:从无线电广播到第一颗通信卫星的诞生
2020年4月21日 · 24年后的1888年,德国物理学家海因里希·鲁道夫·赫兹得出结论,电磁波可以在空中传播,从而证实了麦克斯韦的电磁学理论。 如今,频率单位或每秒的周期数在赫兹之后 …
8MK Ligand Summary Page - RCSB PDB
2017年2月11日 · As a member of the wwPDB, the RCSB PDB curates and annotates PDB data according to agreed upon standards. The RCSB PDB also provides a variety of tools and …
齿轮精度等级含义---请教 - 齿轮传动/增减速机 - 机械社区 - 百万机 …
2011年6月3日 · 大齿轮等级为9-9-8Mk;小齿轮等级为9-9-8Hk 请问阿拉伯数字和字母各代表啥含义,谢谢指点!!!
Michael D. Lyons & 8MK (1973) - earlyradiohistory.us
Michael D. Lyons, a prominent local area amateur radio operator, was hired by the Detroit News to work on the initial construction of the "Detroit News Radiophone", 8MK, which began testing …
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