... sight)environment, the transmission range is up to 50km Transmitter Specification : Modulation COFDMDC InputDC12.5V~DC16.8VWorking Current≤ ... /DC12.5VRS232 Control InterfaceStandard RS232 level, 9600,8,N,1RS232 Data InterfaceStandard RS232 level, supporting 1200~115200ConstellationQPSK,16QAM,64QAM ... 6/7/8MHz, 2.5/1.25MHz(optional)RF Level Input-92dBm~-20dBm / -105dBm~-20dBmRF Impedance50ΩRF InterfaceN ...