随着电视事业的发展,从七十年代末八十年代初起,新开辟的电视频道大多向分米波段扩展。由于当时我国电视行业中电视发射机生产水平的滞后,这些新开设的分米波频道,尤其是在中城市所需的大功率等 With the development of the television industry, since the late seventies and the early eighties, most of the newly opened television channels have expanded to the decimeter band. Due to the lag in the production level of television transmitters in the television industry of our time, these newly-opened decimeter channels, especially the high power required in mid-cities