RF－3200自适应单边带电台，BWT－120A型通用超短波电台，FDH1C－74型单边带发信机等电台是我军目前装备的较先进的电台。在这些电台中其频率合成器均采用了数字锁相式频率合成器电路，在器件的选取上选取了MC145100系列的大规模锁相环电路。鉴于该集成电路的通用性，本文在此将其功能及维修方法作一介绍。 RF-3200 adaptive single sideband radio, BWT-120A universal UHF radio, FDH1C-74 type single sideband transmitter and other radio stations are currently equipped with more advanced radio stations. In these stations, their frequency synthesizers use a digital phase-locked frequency synthesizer circuit, and the large-scale phase-locked loop circuit of the MC145100 series is selected on the device selection. In view of the versatility of the integrated circuit, this article will be its function and maintenance methods for an introduction.