 One of the most important Viet Cong targets , from a symbolic and propagandistic point of view , was the National Radio Station . Its troops had brought along a tape recording of Hồ Chi Minh announcing the liberation of Saigon and calling for a " General Uprising " against the Thiệu government . They seized the building , held it for six hours and , when running out of ammunition , the last eight attackers destroyed it and sacrificed themselves using explosive charges , but they were unable to broadcast due to the cutting off of the audio lines from the main studio to the tower as soon as the station was seized . 
