几年来,我段管内的地区回线广播串音比较严重。例如,哈尔滨车站的站场广播系统,因扩大机这一项设备近年来经陆续大修,大部已采用上海新华无线电厂生产的G Y275×2型扩大机,设备质量随着机械的更新换代已有较大的提高,但又出现了新的问题,即站场广播串音却越来越严重,其 In recent years, I have been in the area of ​​pipelines in the area of ​​radio crosstalk more serious. For example, the station broadcasting system at Harbin Railway Station has been gradually overhauled in recent years due to the enlargement of its equipment. Most of the stations have adopted the GY275 × 2 expansion machine manufactured by Shanghai Xinhua Radio Factory. The quality of the equipment has been updated with the upgrading of machinery There has been a big improvement, but new problems have emerged, that is, station broadcast crosstalk is getting worse and worse.