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近年来各地陆续建成很多地下的公共设施,如地铁、地下商场、地下娱乐场所等。由于这些场所深入地下,无线电波被屏蔽,无线寻呼信号无法进入,这在一定程序上限制了无线寻呼的发展。为了解决这一问题,兰新无线电厂研制了多信道地下空间无线寻呼引入系统,将地面的无线寻呼信号引入地下,扩大了寻呼系统的覆盖区域。
In recent years, many underground public facilities have been built around the country, such as subways, underground shopping malls and underground entertainment venues. Because these places go deep into the ground, the radio waves are shielded and wireless paging signals can not enter, which limits the development of radio paging to a certain extent. In order to solve this problem, Lanxin Radio Factory has developed a multichannel wireless paging introduction system for underground space, introducing radio paging signals of the ground into the ground and expanding the coverage area of the paging system.