湖北省五三农场罗汉寺无线电厂研制生产的JGY863型机械故障电子测听器,系国内首创。自1986年9月通过国家签定以来,全国十七个省、市、自治区的三百多个单位纷纷来人来函争相购买,产品供不应求。目前已投入批量生产。JGY863型机械故障电子测听器体积小,易 The JGY863 mechanical fault electronic hearing instrument developed and produced by Luohansi Radio Factory of Hubei Wusan Farm was the first in China. Since the country’s signing in September 1986, more than 300 units from 17 provinces, municipalities and autonomous regions across the country have come to rush to buy each other, and their products are in short supply. Has been put into mass production. JGY863 mechanical fault electronic audio detector is small and easy