And this news from Colorado: Community radio station KGNU, 88.5FM in Boulder, announced yesterday that it is set to expand into the Denver market by purchasing a commercial AM radio signal. KGNU will begin broadcasting in Denver on 1390 AM this Sunday with special coverage of the protests against the Republican National Convention. The purchase bucks the trend in the radio world which has witnessed rapid consolidation in ownership over the past decade. One company, Clear Channel now owns over 1200 channels across the country including 8 in Denver.