... set programming broadcast on the broadcast content and broadcast time, frequency and cycle settings many times to play and any programming ... group of conventional broadcasting equipment (amp machine, VCD, tape, radio head, transmitter, etc.) and 4-way power control sub-control broadcast. 12 ... Signal to noise ratio:> 90dB; total harmonic distortion: <0.1%; Frequency response: 20Hz-18K MP3 Smart player