radio relay communication line
71electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… …
72Communications in Egypt — Life in Egypt Culture Cuisine …
73Radioamateur — Pour les articles homonymes, voir Radio. Le shack ou station d un opérateur radioamateur …
74Radioamateurisme — Radioamateur Pour les articles homonymes, voir Radio. Le shack ou station d un opérateur radioamateur …
75Radioamateurs — Radioamateur Pour les articles homonymes, voir Radio. Le shack ou station d un opérateur radioamateur …
76Guinea — Guinean, adj., n. /gin ee/, n. 1. a coastal region in W Africa, extending from the Gambia River to the Gabon estuary. 2. Formerly, French Guinea. an independent republic in W Africa, on the Atlantic coast. 7,405,375; ab. 96,900 sq. mi. (251,000… …
77Citizen Corps — is a United States national service program under the jurisdiction of the Department of Homeland Security that seeks to mobilize the population of the country against threats to national security as well as to assist in the recovery after a… …
78Telecommunications in Saudi Arabia — Telephones main lines in use: 3,317,550 (2002) Telephones mobile cellular: 21,500,000 (2007) note: In 2004, the Saudi Telecom Company (STC) monopolization was broken by authorizing Etihad Etisalat/Mobily to compete in mobile communication, in… …
79Telecommunications in Mali — Children watch television in a village in rural Mali. Mali, a large, landlocked, multicultural country in West Africa, consistently ranks low in the Human Development Index. The infrastructure of Communications in Mali, while underdeveloped, is… …
80Communications in Lebanon — This article concerns the systems of communication in Lebanon. Lebanon possesses a number of systems of telecommunication, some of which are currently being reconstructed following damage during the civil war. The country code and top level… …
