SW100-Ⅱ型PSM短波发射机高末调谐故障的分析与处理

High SW100- PSM shortwave transmitter tuned at the end of the fault analysis and processing Ⅱ

为了保障发射机能够在工作频率范围安全可靠运行,发射机的各级调谐网络、阻抗变换网络和滤波网络的元器件都必须按照设计或预置的参数进行准确的调整,才能保证发射机稳定和满功率的输出,才能保证发射机不间断的播音。本文简要介绍了SW100-Ⅱ型PSM短波广播发射机高末前级调谐电路的工作原理。结合实际工作中发射机高前级鉴相器的细调谐驱动装置出现的故障进行了论述。

in order to ensure safe and reliable operation of the transmitter to the operating frequency range, a transmitter tuned at all levels of the network, network impedance transformation and filtering network components, must be in accordance with the design or preset parameters to adjust accurately, to guarantee the stability of transmitter and the output of the full power, to guarantee the broadcast transmitter uninterrupted. This paper briefly introduces the SW100 - Ⅱ PSM shortwave radio transmitter working principle of high level before the end of the tuning circuit. Combined with practical work the transmitter high grade fine tuning phase discriminator before driving devices of fault are discussed.