很多接收亚太一号A卫星模拟电视节目的家庭用户,早期使用单极馈源加高频头的组合只能收到七套或四套节目,更换双极一体化高频头后可以方便收齐十一套节目。而换下来的高频头和单极馈源较多,弃之不用实在可惜,于是笔者考虑:如经过简单加工,接V/H极化选择器同样可以收齐十一套模拟节目,未尝不是一个节约的好办法,于是参照《电子报》1998年合订本上介绍的方法试制,上机实验发现两个缺点较为突出:1.调节不方便,特别是要调焦即 Many home users who receive Asia Pacific Satellite A Satellite Analog TV programs can only receive seven or four programs from a combination of early unipolar feed plus tuner headsets. Eleven programs. And replace the high-frequency head and monopole more, do not abandon it is a pity, so I consider: If after simple processing, then V / H polarization selector can also receive eleven simulations, is not it? A good way to save, so with reference to the “News” in 1998 the book on the trial version of the method introduced on the machine experiment found that two shortcomings are more prominent: 1. The adjustment is not convenient, in particular, to focus on