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AUTOVON telephone. The Automatic Voice Network (AUTOVON, military designation 490-L) [1] was a worldwide American military telephone system. The system was built starting in 1963, based on the Army's existing Switch Communications Automated Network (SCAN) system.
Ten-codes, officially known as ten signals, are brevity codes used to represent common phrases in voice communication, particularly by US public safety officials and in citizens band (CB) radio transmissions. The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code. [1]
A Radio code is any code that is commonly used over a telecommunication system such as Morse code, brevity codes and procedure words. Brevity code
All radio and television stations within 320 kilometers (199 miles) of the US-Canada or US-Mexico border must get approval by both the domestic and foreign agency. These agencies are Industry Canada / Canadian Radio-television and Telecommunications Commission (CRTC) in Canada, the Federal Communications Commission (FCC) in the US, and the ...
one of the few non-contiguous area codes in North America; 707: California (Vallejo, Crescent City, Eureka, Redwoods National Park, Santa Rosa, Ukiah, and most of northwestern California) 1959: split of 415; 2023: to be overlaid by 369; 708: Illinois (western and southern portions of suburban Cook County and far eastern sections of Will County ...
Newington, CT: American Radio Relay League. 2007. Containing all 32,400 Maidenhead Locator Squares; IARU Locator of Europe. Potters Bar, UK: Radio Society of Great Britain. 1984. IARU Locator of Western Europe. Potters Bar, UK: Radio Society of Great Britain. 1985. (scale 1:2,000,000) ARRL Amateur Radio Map of North America.
Single DIN (180 mm × 50 mm or 7.09 in × 1.97 in) in Europe, South America, and Australasia A compact size that easily fits into a dashboard, but the unit is not tall enough to accommodate a video display. Double DIN (180 mm × 100 mm or 7.09 in × 3.94 in) in Japan, the UK, and North America.
Toll-free telephone numbers in the North American Numbering Plan have the area code prefix 800, 833, 844, 855, 866, 877, and 888. Additionally, area codes 822, 880 through 887, and 889 are reserved for toll-free use in the future. 811 is excluded because it is a special dialing code in the group NXX for various other purposes.