CQ 业余无线电活动是多姿多彩的,除了通常的V/UHF波段通信之外,还有更广阔的天地,那就是业余无线电短波通信。V/UHF波段通信由于电波是直线传播的关系,通信距离只限于视距范围,就算有的地方安装了中继台,使通信距离有了很大的扩展,但是,通常都只是局限于本地范围内的通 CQ amateur radio activities are colorful, in addition to the usual V / UHF band communications, there is a broader world, that is, amateur radio shortwave communications. V / UHF band communications Because of the linear propagation of radio waves, the communication distance is limited to the line of sight, even if the relay stations installed in some places, the communication distance has been greatly expanded, but usually only limited to the local area Inside the pass