Federal regulators Thursday proposed $495,000 in indecency fines against Clear Channel Communications for broadcasts by Howard Stern, prompting the nation's largest radio chain to drop the country's best-known shock jock. Clear Channel suspended Stern in February from its six stations that carry his program, which regularly features graphic sexual discussion and humor. It decided to make the move permanent after the Federal Communications Commission cited the chain for 18 alleged violations from Stern's April 9, 2003, show. (...) "You've got to vote Bush out to send a message as a Howard Stern fan," (Howard) Stern said during one recent broadcast. "There's a cultural war going on. The religious right is winning. We're losing."