Seattle TV and Radio is about to experience some big changes. Yesterday the Sinclair Broadcast Group announced that it was buying Seattle-based Fisher Communications for about $373 million. Fisher owns 20 television stations including KOMO in Seattle, and four Fisher radio stations in Seattle, including KOMO. Other stations include KIMA and KEPR in Yakima and the Tri-Cities, KATU in Portland, KVAL in Eugene and KBOI in Boise. Ross Reynolds gets the skinny on Sinclair from Northwestern University professor Dan Kennedy.