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Radar beacon. Racon signal as seen on a radar screen. This beacon receives using sidelobe suppression and transmits the letter "Q" in Morse code near Boston Harbor (Nahant) 17 January 1985. Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1 ...
The Maidenhead Locator System (a.k.a. QTH Locator and IARU Locator) is a geocode system used by amateur radio operators to succinctly describe their geographic coordinates, which replaced the deprecated QRA locator, which was limited to European contacts. [1] Its purpose is to be concise, accurate, and robust in the face of interference and ...
1993: split to create 905. 2001: overlaid by 647. 2013: overlaid by 437. 2025: overlaid by 942. area code 387 is reserved as a fifth code for the region. 417. Missouri ( Springfield, Joplin, Branson, Lamar, Lebanon, and most of southwestern Missouri) 1950. created from parts of the area codes 314 and 816.
The blue area is assigned area codes 301, 240, and 227; the red area is area codes 410, 443 and 667. The state of Maryland is served by the following area codes: Area codes. Numbering plan area. 227.
List of Tennessee area codes. Map of all Tennessee area codes. 423 - Chattanooga, Johnson City, Kingsport, Bristol: Initially split from 615 in 1995. 615 and 629 (overlay) - Greater Nashville, including Murfreesboro: 615 initially split from 901 in a 1954 flash-cut. The 629 overlay for the entire area code was made effective in 2015.
This is a list of area codes in the Commonwealth of Virginia . 276 — Southwest corner of the state including Bristol, Galax, Martinsville, and Wytheville (September 1, 2001 as split from 540). 434 — South central area including Charlottesville and Lynchburg (June 1, 2001 as split from 804). 540/826 — Central and North including ...
List of Wisconsin area codes. The U.S. state of Wisconsin is serviced in five distinct numbering plan areas (NPAs) with the following area codes of the North American Numbering Plan (NANP). Area codes 414 and 715 were among the original North American area codes assigned in 1947. Milwaukee County and several outlying areas served by Milwaukee ...
Numbering plan areas and area codes since May 2001 September 1997 – May 2001 July 1988 – September 1997 October 1947 – July 1988. Massachusetts is divided into five distinct numbering plan areas (NPAs), which are served by nine area codes in the North American Numbering Plan (NANP), organized as four overlay complexes and a single-area code NPA.
The area codes in the U.S. State of New Jersey are a component of the North American Numbering Plan . 201: Northeastern New Jersey, primarily Bergen County and Hudson County. 551: Overlays area code 201. 609: Trenton, Lawrenceville, Princeton, Medford, Atlantic City, Barnegat, Wildwood, Ocean City, Burlington, Cape May. 640: Overlays 609.
Seattle, Shoreline, Lake Forest Park, Mercer Island, Bainbridge Island, Vashon Island. Original statewide area code until 1957, when area code 509 was created for Eastern Washington. Further splits in 1995 to create area code 360 for most of Western Washington, and 1997 to form area codes 253 and 425. 564 will be added to the 206 area in 2025. 509.