KIRKLAND (WiMAX Day). Clearwire Corp closed the first tranche of a US$1 billion senior secured term loan last week. The new debt facility will be used to refinance Clearwire’s existing debt. “Clearwire continues to develop a broader following on Wall Street,” said Christopher Harland, chairman of Global Media and Communications at Morgan Stanley, in a press release. The transaction was led by Morgan Stanley, Merrill Lynch, JP Morgan and Citigroup.