KIRKLAND (WiMAX Day). Clearwire announced yesterday that it has completed the first phase of field tests for mobile WiMAX. In a leafy suburb of Portland, Oregon, the testing was conducted by Clearwire with Intel and Motorola using 2.5 GHz spectrum and 802.16e equipment. In a press release, Scott Richardson, Clearwire chief strategy officer, said “The successful completion of the first phase of our mobile WiMAX trial is a significant milestone in our efforts to commercially deploy true mobile broadband services in the US.”