The recent George Soros-backed takeover of 18 Hispanic radio stations, including Miami’s flagship conservative Radio Mambí, is doomed to fail, according to two hosts who quit the station as a result of the planned new progressive agenda.... ...The newly-formed network is run by two former Democratic operatives... ...Last month the FCC formally approved the deal, clearing the way to turn Radio Mambí and the other stations into a new progressive network. Altogether, the sale includes 18 stations, among them 10 AMs and eight FMs in the biggest US markets.... ...Media Research Center director of MRC Latino Jorge Bonilla predicted that...