sentences:  When Ludwig Wolfgang Frohlich, the owner of National Science Network died, his estate explored various opportunities to sell the station.In 1973, a sale to KMPX, Inc.—a subsidiary of the Burbank Broadcasting Company, which bought KPPC-FM— including one offer from film director Francis Ford Coppola for $870,000, which was not consummated.The company finally found a buyer in 1978, when Family Radio, owner of KEAR (97.3 FM), struck a deal to purchase the station for $1 million.