... point, one point to multipoint, multipoint relaying13. Multi-channel audio and video signal transduction: division multiplexing14. Working voltage: AC220V± ... , one analog channel can be used to transmit 2-6 channels digital a/v signalsTransmitting antenna can be ... directional or omnidirectional, set up is very convenient and simple.Support NLOS transmission. 1KM Wireless COFDM Transmitter and Receiver