随着农村有线广播事业的发展,县至公社广播专线建成之后,为了提高专线的利用率,势必要搞一线多用,载波传输(调频或调幅)由于投资少,效果好,因而得到广泛的采用。但是,目前还没有质量较好的有线广播载波机的定型产品,一般只好自己设计、自己制造广播载波机。根据在我县搞调频载波的实践,我 With the development of cablecasting in rural areas, after the completion of the broadcasting line from county to commune, in order to improve the utilization rate of green lines, it is bound to engage in front-line and multi-purpose applications. Carrier transmission (FM or AM) has been widely adopted because of less investment and good effect. However, at present there is no stereotyped product of a better quality cable broadcast carrier, and generally, it has to design itself and make a broadcast carrier by itself. According to the implementation of FM carrier in our county practice, I