Wireless broadband provider Clearwire now says expects to provide service in 80 US markets. Clearwire launched mobile WiMax service in Portland (OR) in January and plans to spend $1.5 billion to $1.9 billion this year to launch in such cities as Philadelphia, Chicago and Dallas. Unlike mobile voice, where coverage is king, the key driver for mobile broadband is network capacity," Chief Executive Ben Wolff said. The company's large stash of radio spectrum allows Clearwire to provide the required capacity, he said.
