了解调频接收机整机各单元电路之间的关系及相互影响，从而能正确设计，计算调频接收机的各个单元电路：输入回路，高频放大，混频，中频放大，鉴频及低频功放级。初步掌握调频接收机的调整及测试方法。-Understand the FM receiver each unit of the relationship between the circuit and influence each other, thus can correct design, calculation of each unit cir