Clearwire launches WiMAX service in Portland.

"Clearwire has indicated it will launch mobile WiMAX in more markets in 2009, including Atlanta, Chicago and Boston, but has yet to give firm dates for more launches. Some analysts have cautioned that Clearwire, despite receiving $3.2 billion in capital investments from Intel, Google, Comcast and others, may not have enough capital to proceed with an overly ambitious rollout plan and may have to scale back its plans. "