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1982年,针对我台中波621kHz广播音域窄、音质闷、边远地区保证不了收听效果的问题,从节目录制、播控中心、发射系统及接收设备等环节,进行了系统的技术测试,听评和鉴别等试验工作。对各种类型收音机的高频带宽、音频的频率特性测试了近百台次,初步弄清了接收设备的特性。在此基
In 1982, for my Taichung wave 621kHz radio range narrow, sound quality boring, remote areas can not guarantee the listening effect, from the program recording, broadcast control center, transmitting system and receiving equipment and other aspects of the system technical testing, listening and evaluation Identification and other experimental work. The radio frequency of various types of high-frequency bandwidth, audio frequency characteristics of nearly 100 tests, initially clarified the characteristics of the receiving device. In this base