现在各电视台进行台外直播一般使用电视转播车摄取现场信号，经过导演切换，由微波传输到电视台后再发送出去；在这一过程中，台内设备和转播车经过长期的运行和定期的维护，信号的质量一般都能稳定，而微波传输设备由于其临时性和室外作业环境的恶劣性，信号的稳定性及质量均 At present, all television stations broadcast out of the station live television using a television broadcaster to pick up the scene signal. After the director switches, the microwave is transmitted to the television station and then sent out. In this process, the station equipment and broadcast car after long-term operation and regular maintenance , The quality of the signal generally can be stable, and microwave transmission equipment because of its temporary and outdoor bad working environment, signal stability and quality