![]() ![]() Armstrong invents frequency modulation (FM) technology.ġ946: AT & T creates the first mobile telephoneradio system to connect with the public telephone network.ġ983: Pilot commercial mobile telephone system operates in Chicago and Baltimore.ġ993: Stephen B. ![]() ![]() As the burgeoning demand for wireless services continues to skyrocket, American Tower is committed to providing the most advanced technology, human support, and turnkey site solutions to meet these growing needs.ġ935: Edwin H. Our fully integrated areas of business-including site development, construction, components, monitoring, site management, and site leasing combine to form an indispensable resource center that serves the infrastructure needs of the wireless industry-everything from the ground up. Headquartered in Boston, American Tower operates regional hub offices in Boston, Atlanta, Chicago, Houston, San Francisco and Mexico City. NAIC: 513322 Cellular and Other Wireless TelecommunicationsĪmerican Tower is a leading independent owner, operator and developer of broadcast and wireless communications sites in North America and Mexico. Incorporated: 1995 as American Tower Systems Corporation ![]()
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