Clearwire Corporation (NASDAQ: CLWR) (stylized as clearw˙re) provides mobile and fixed wireless broadband communications services to retail and wholesale customers in Belgium, Spain and the United States. Clearwire traces its roots to 1998, when Sierra Technologies, Inc., spun off certain assets to form a new company, Clearwire Technologies Inc. In October 2003, Craig McCaw purchased Clearwire Technologies, Inc. parent company Clearwire Holdings and moved the company headquarters to Kirkland, Washington.

A large percentage of Clearwire shares are owned by a number of larger companies including Sprint Nextel Corporation, Comcast Corporation, Time Warner Cable Inc., Bright House Networks, LLC, Google Inc. and Intel Corporation. Sprint Nextel is Clearwire's largest single shareholder, owning a 50.8% combined stake and control of the company.

Clearwire provides services to 88 markets in the United States covering 134 million potential subscribers. Clearwire owns rights to radio frequency spectrum in the 2.5 GHz range and provides service primarily using the 4G 802.16e mobile WiMAX standard. Clearwire also provides service to customers in 17 U.S. cities using the Motorola Expedience 802.16d radio interface that the company refers to as "Pre-4G".

Today Clearwire ranks as the fifth largest wireless provider in the US with roughly 11 million subscribers that use the WiMAX network as of January 2012. However, only a little over 1.3 million of subscribers that use Clearwire's network are direct customers, the remainder are Sprint subscribers who gain access to the pre-4G network through a wholesale supply agreement. Clearwire states that this results in a blended mix of revenues that averages $11 per month per subscriber, a figure that is approximately one quarter that of an integrated national mobile operator.

Clearwire provides service in Spain in the 3.4 - 3.6 GHz frequency range.

Read more about ClearwireHistory, Wholesale Products and Services, Criticism

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Sprint Corporation - Wireless Networks - WiMAX
... Sprint Nextel currently does not have complete ownership of its 4G WiMAX network operated by Clearwire Corporation Sprint and its various subsidiaries ... Nextel announced it would merge its WiMAX wireless broadband unit with Clearwire Corporation, receiving equity in Clearwire in return ... Sprint is currently the majority owner of Clearwire equity, holding a 50.9% stake in the company ...
Sprint Corporation - History - Investment in Clearwire Corporation
... Sprint Nextel owns a 50.8% equity interest in Clearwire Corporation ... in total, to purchase the portion of Clearwire Corporation shares that Sprint Nextel does not already own ...
Craig McCaw - Later Ventures
... In August 2004, McCaw founded Clearwire Corporation a provider of wireless broadband Internet service ... At the end of 2007, Clearwire offered service in 46 markets in the U.S ... McCaw, who served as Chairman of Clearwire until December 31, 2010, once said to an interviewer, "Filling a need that others aren't addressing has always been a focus of the companies that I have been ...
Clearwire - Criticism
... In 2005, Clearwire drew criticism from phone operator Vonage ... Vonage claimed that Clearwire and other ISP's were blocking Vonage's services ... Vonage calls were being connected over the Clearwire network ...