谐波滤波器是DF100A短波发射机的重要组成部分,在使用的过程中常常会出现各种设备故障,如果不能很好的处理和预防,将会严重影响安全播音。本文着重阐述DF100A短波发射机谐波滤波器的原理和维护。1谐波滤波器的滤波器的选择滤波器是用来选择频率的电路,即让某些频率通过同时阻止其他频率信号的通过。滤波器有多种形式:低通、高通、带通、带阻。低通滤波器同规格所有低于截止频率-3d B的频率,这种滤 Harmonic filter is an important part of the DF100A short-wave transmitter. In the process of using it, various equipment faults often occur. If not well handled and prevented, the safety broadcasting will be seriously affected. This article focuses on the principle and maintenance of the DF100A shortwave transmitter harmonic filter. A harmonic filter filter selection Filter is used to select the frequency of the circuit, that is, some of the frequencies through the same time to prevent the passage of other frequency signals. Filter in many forms: low-pass, high-pass, band-pass, with resistance. Low-pass filter with the specifications of all lower than the cut-off frequency -3d B frequency, this filter