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随着电子技术和集成电路的日趋成熟,收音机已经向着多波段袖珍型的方向发展。多波段收音机一般指含有LM长波,AM中波,SW短波和FM调频波段的收音机。长波段在我国没有广播电台,选购时可以不考虑此项。中波波段一般都是指接收频率在530～1600kHz范围,短波段接收频率在5.90～21.95MHz。而在这个频率范围内为了使调谐手感好展宽了调谐宽度,将这个波段又分为四个到十个短波段,使接收的稳
With the maturing of electronic technology and integrated circuits, radios have moved toward multi-band miniatures. Multi-band radio generally refers to the LM long wave, AM wave, SW shortwave and FM FM radio. Long-range radio stations in our country do not have to consider this option. Medium wave band generally refers to the receiving frequency in the range of 530 ~ 1600kHz, short band receiving frequency of 5.90 ~ 21.95MHz. In this frequency range in order to make the tuning feel good broadened the tuning width, this band is divided into four to ten short-band, so that the received steady