NAA was a major radio facility located at 701 Courthouse Road in Arlington, Virginia . It was operated by the U.S. Navy from 1913 until 1941. The station was originally constructed as the Navy's first high-powered transmitter for communicating with its bases across the U.S. and the Caribbean. During its years of operation NAA was best known for broadcasting daily time signals , however, it also provided a variety of additional services, using multiple transmitters operating on frequencies ranging from longwave to shortwave. The station also conducted extensive experimental work, including, in 1915, the Navy's first transatlantic transmission of speech.
31-763: [REDACTED] Look up naa in Wiktionary, the free dictionary. NAA or Naa may refer to: People [ edit ] Naa Ashorkor (born 1988), Ghanaian actress and radio/ TV broadcaster Naa Govindasamy (1946–1999), Singaporean Tamil-language writer and computer font developer Naa Someswara , Indian science writer and TV presenter Businesses and organizations [ edit ] Airports and aviation [ edit ] Narita International Airport Corporation , Japan Narrabri Airport (IATA code NAA), New South Wales, Australia National Aeronautic Association , US National Aviation Academy , training school in
62-599: A longwave frequency of 113 kHz and the shortwave frequency of 9.425 MHz. In the mid-1930s NAA was paired with NSS in Annapolis, Maryland to make joint transmissions, with both stations automatically controlled by the Washington observatory. By the late 1930s many of the activities conducted at NAA had been transferred to other sites, and it was decided that the Arlington operations were no longer needed. In anticipation of
93-606: A molecular biology technique for replicating segments of DNA Network Address Authority , iSCSI terminology Other uses [ edit ] National Arabic Alphabets , in the Unicode standard VLF Transmitter Cutler (call-sign NAA), a radio station in Cutler, Maine, operated by the United States Navy NAA (Arlington, Virginia) a Navy radio facility located in Arlington, Virginia from 1913 to 1941 Topics referred to by
124-483: A presenter with Starr 103.5 FM where she hosted a midmorning show dubbed The Zone . In 2008, she was featured in her first movie by Shirley Frimpong-Manso . She was a presenter with the Multimedia Group from 2017 till 2020, where she hosted Showbiz A-Z and Strong and Sassy. She moved to Asaase Radio at the end of June 2020 and currently hosts the shows Between Hours and Just Us . In March 2021, she
155-503: A synthetic auxin (organic compound and plant hormone) N -Acetylaspartic acid , a neurochemical often imaged in magnetic resonance spectroscopy Neutron activation analysis , a nuclear process used for determining the concentrations of elements in materials Nicotinamide , also called niacinamide, the amide of nicotinic acid No abstract available bias , an academic tendency to preferentially cite journal articles that have an abstract available online Nucleic acid amplification ,
186-478: A tremendous increase, to over 500, in the number of private radio broadcasting stations operating in the United States. During this developmental period there was an ongoing search for innovative programming, and a number of stations began picking up NAA's twice-a-day longwave time signal transmissions, at noon and 10 p. m. Eastern time, and rebroadcasting them for their local audiences. Effective May 15, 1923
217-562: A vacuum tube transmitter, NAA soon followed with a limited schedule of its own. On May 30, 1922 NAA and NOF jointly broadcast the ceremonies held at the dedication of the Lincoln Memorial , which was the first time that two stations simultaneously transmitted the same program. In late 1922 it was decided that NOF would focus on experimental work, and effective January 3, 1923 all of its former broadcasts were transferred to NAA. A special 1.5 kilowatt transmitter had been built at Anacostia for
248-532: Is different from Wikidata All article disambiguation pages All disambiguation pages Naa Ashorkor Naa Ashorkor (born 24 November 1988), also known as Nisirine Naa Ashorkor Mensah-Doku , is a Ghanaian actress and media personality who currently works at Media General Limited, which houses TV3 Ghana and others. Before joining the Media General Limited, she formerly worked with Asaase Radio , an Accra -based radio station. She
279-481: Is discontinued at 11 p. m.), and 2,677 meters, 112 kc. 11 p. m.—Angot message on 74.7 meters, 4,015 kc. All times given are eastern standard. Time, weather, and navigational warnings are sent on a. c. w. Beginning in 1920, a Navy station located in Anacostia, D.C., NOF , began broadcasting occasional entertainment programs. After installing
310-659: Is known for starring in The Perfect Picture (2009) and Iroko TV's Poisoned Bait . In 2010, she won Best Actress at the Africa Movie Academy Awards for her role played in The Perfect Picture . Naa Ashorkor also starred alongside Yvonne Okoro , Joselyn Dumas , John Dumelo . Ashorkor, along with Chris Attoh , hosted the 2016 Vodafone Ghana Music Awards . She also hosted the Miss Malaika Ghana pageant for eight years. Askorkor started off as
341-478: The "three sisters" towers. The contract to raze the towers was awarded to the Long Island Machinery & Equipment Company, Inc., whose winning bid was only $ 1. The demolition was completed that summer, ending nearly 30 years that NAA had been at the site. Beginning in 1945, WWV , a National Bureau of Standards station in nearby Greenbelt, Maryland, became the primary station broadcasting time signals in
SECTION 10
#1732844595813372-1537: The Atlantic. Effective April 15, 1919 the ban on civilian reception of radio signals was lifted, so NAA's time signal transmissions were again available to the general public. The transmitting schedules of Washington (Arlington (NAA)), exclusive of radiotelephone broadcast on 434.5 meters, 690 kc., are as follows: 8.15 a. m.—Special aviation weather on 74.7 meters, 4,015 kc., 37.4 meters, 8,030 kc.; 24.9 meters, 12,045 kc. 10 a. m.—Marine weather—Major bulletin on 2,677 meters, 112 kc.; and 18.6 meters, 16,060 kc., followed by ice reports (in season) on 2,677 meters, 112 kc. 11 a. m.—Angot message on 24.9 meters, 12,045 kc. 11.55 a. m.—Time on 2,677 meters, 112 kc.; 74.7 meters, 4,015 kc., 37.4 meters, 8,030 kc.; 24.9 meters, 12,045 kc. 12 (noon).—Navigational warnings on 2,677 meters, 112 kc. 8.15 p. m.—Special aviation weather on 74.7 meters, 4,015 kc. 9.55 p. m.—Time on 2,677 meters, 112 kc., 74.7 meters, 4,015 kc., 37.4 meters, 8,030 kc.; 24.9 meters, 12,045 kc. 10 p. m.—Marine weather—Major bulletin, followed by ice reports (in season) and navigational warnings on 8,328 meters, 36 kc. (this wave length
403-455: The Department of Commerce, which regulated civilian radio in the United States from late 1912 until the mid-1920s, announced that there would be a major expansion in the number of frequencies made available for broadcasting. As part of this allocation NAA was assigned exclusive use of 690 kHz, which meant persons who didn't have radios that tuned to NAA's longwave frequencies could now pick up
434-687: The Smithsonian Institution, US National Archives of Australia National Assessment Agency , in the UK Department for Education and Skills National Association of Actors , a Mexican television and motion picture performers union National Auctioneers Association , US Negro American Association , US baseball minor Negro league Newspaper Association of America , a trade association Nigerian Accounting Association North American Arms , an arms company In science and technology [ edit ] 1-Naphthaleneacetic acid ,
465-512: The US National aviation authority or civil aviation authority, in each country North American Airlines , founded 1989, ceased operations 2014 North American Aviation , major US aerospace manufacturer from 1928 to 1967 Norwegian Air Argentina , an Argentinian airline In other fields [ edit ] National Academy of Arbitrators , US and Canada National Academy of Arts , Bulgaria National Anthropological Archives of
496-570: The Yensor Nkoaa commercials. On Saturday, 1 June 2024, she co-hosted the 25th Telecel Ghana Music Awards with Chris Attoh . Naa Ashorkor married her longtime partner Ahuma Cabutey Adodoadji in 2014. On 15 August 2017, she announced the birth of her son via news outlets and social media. She announced the birth of her second child, also a son, on 1 July 2019. Film Television Stage Radio Entertainment Review and Analysis NAA (Arlington, Virginia) The establishment of NAA
527-643: The concerts of the Marine and Navy Bands, and educational information originating with the Public Health Service, Veterans' Bureau, Children's Bureau, Bureau of Education and Department of Commerce. NAA operates on 710 meters [422 kHz], Eastern Standard Time. The Marine Band Concerts are scheduled for Mondays at 4:30 P. M. and Wednesdays at 8:30 P. M. and the Navy Band Concerts for Fridays at 8:30 P. M." The "broadcasting boom" of 1922 resulted in
558-418: The eastern United States and Atlantic ocean. In addition to mariners, the time signals soon found two appreciative civilian audiences: amateur radio operators, interested in a practical benefit from their hobby, and jewelers, who previously had been reliant on time services transmitted over telegraph wires, which had a reputation for being both expensive and of questionable reliability, especially compared to
589-505: The first transmission of speech across the Atlantic. With the entrance of the United States into World War I in April 1917 the federal government took over full control of the radio industry, and it became illegal for civilians to possess an operational radio receiver. However NAA continued to operate during the conflict. In addition to time signals and weather reports, it also broadcast news summaries received by troops on land and aboard ships in
620-755: The free and very accurate NAA transmissions. NAA's original transmitters were only capable of producing the dots-and-dashes of Morse code . The later development of vacuum tube transmitters made audio transmissions practical, and in 1915 the American Telephone and Telegraph Company (AT&T) received permission from the Navy to conduct a series of tests at the NAA facility. These experimental transmissions set impressive new audio distance records, and were heard as far west as Hawaii. They were also received in Paris, France, which marked
651-409: The most visible feature was the free-standing towers, known as "The Three Sisters", which supported the antenna wires. The main tower reached 600 feet (180 metres), while the other two towers were 450 feet (140 metres) tall. Two additional 200-foot (61-metre) towers were constructed in 1923. Arlington was the first station in a proposed "High-Powered Chain" that would link the U.S. capital with much of
SECTION 20
#1732844595813682-553: The new operation, and an announcement at the time described the programming that would be now be carried over NAA: "The broadcasting service of NOF has been taken over by station NAA, United States Navy Department, Arlington, or Radio, Virginia. In addition to the transmission of time signals, news items, crop and market reports, weather forecasts, naval business, communications for the Signal Corps and speeches of celebrities, which NAA has been broadcasting, there will be serviced by NAA
713-577: The rest of the world. The initial transmitter was a 100 kilowatt rotary-spark , designed by Reginald Fessenden . Test transmissions that began in November 1912 were promising enough to convince the U.S. Congress to finance the construction of similar stations at San Diego, California, Darien in the Panama Canal Zone, Pearl Harbor, Hawaii, and Cavite in the Philippines. Shortly after the NAA installation
744-403: The same term [REDACTED] This disambiguation page lists articles associated with the title NAA . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=NAA&oldid=1092679718 " Category : Disambiguation pages Hidden categories: Short description
775-550: The shutdown, in 1938 three new 600-foot towers, similar in design to the main NAA towers, were erected for NSS at Annapolis. There were also plans to build a new airport near the NAA site, which opened in 1941 as National Airport , so it was agreed that the NAA radio towers would be torn down because they posed a hazard to aircraft. In preparation for the decommissioning, transfers were made of transmitting equipment to NSS Annapolis and receiving equipment to NSS Cheltenham, Maryland. In January 1941 bids were solicited for tearing down
806-511: The standard for naval installations until the development of vacuum tube transmitters in the early 1920s. However, the Fessenden spark transmitter remained in use until July 8, 1923, when it was replaced by a vacuum tube transmitter. From its inception in 1913 NAA was used to transmit daily time signals, which were supplied by the Naval Observatory in Washington, D.C. Accurate timekeeping
837-497: The station on standard receivers. By 1923, NAA had six transmitters in operation, providing, in addition to time signals and military communication, weather reports and navigational warnings. Station listings from 1926 to 1936 report that the NAA's transmitter on 690 kHz was rated at 1,000 watts. Over the years NAA eliminated its entertainment broadcasts, and the time signal broadcasts on 690 kHz were ended in 1936. After this time signals continued to be sent, most commonly on
868-492: Was completed, the Federal Telegraph Company got grudging permission to install one of its 35 kilowatt Poulsen arc transmitters, for comparative tests with the rotary-spark transmitter. To the surprise of Navy personnel, even though the arc transmitter had only about half the power, it was found to be clearly superior. As a result, arc transmitters would be installed at the other high-powered stations, and they became
899-417: Was critical for ocean navigation, since an error in a ship's chronometer of even a few minutes could result in the vessel dangerously miscalculating its position. U.S. Navy radio stations had begun daily broadcasts of time signals in 1905, however due to their low power these station's transmission ranges were limited. NAA's high-powered signal meant it could be heard over a much greater area, covering much of
930-520: Was the first step of an ambitious U.S. military project to establish reliable long distance radio communication. (At this time radio was commonly known as "wireless telegraphy".) The site chosen for the NAA installation, which became known as "Radio, Virginia", was across the Potomac River from Washington, D.C., adjacent to the Fort Myer military base in Arlington, Virginia. Construction began in 1911, and
961-571: Was the host for the 3Music Awards . She is a business woman who runs two ventures: Jaarno, a digital food market, and April Communications, which handles theatre productions. Ashorkor is a brand ambassador for Unilever Ghana as well as Verna Mineral Water. She also advocates DKT International Ghana, where she serves as the Lydia Contraceptives Brand Ambassador. Ashorkor had been involved in several popular television commercials, notably for Tigo Ghana's Drop That Yam and