... layer2Audio Sample Rate44.1KHzAudio Rate256KbpsRS232 Control InterfaceStandard RS232 level, 9600,8,N,1RS232 Data InterfaceStandard RS232 level, supporting 1200~115200ModulationCOFDMConstellationQPSK,16QAM ... )FEC1/2, 2/3, 3/4, 5/6, 7/8 (optional)Guard Interval1/4, 1/8, 1/16, 1/32 (optional)Bandwidth8MHzSensitivity≤- ... reason of delays. 2~5W Full-Duplex Digital Audio Bidirectional Wireless Transmitter