There are more radio kinds. Based on electronic device, there are valve radio set, transistor radio, integrated circuit radio,etc.. Based on circuit characteristic, there are enlarged type radio, superheterodyne type radio, stereo radio of frequency modulation,etc. directly. Based on wave band, there are mediumwave radio, intermediate wave radio, long intermediate wave radio,etc.. Divide according to modulating the way, there are amplitude modulation radios AM , frequency modulation radio FM , AM/ FM amplitude modulation frequency modulation radio.
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Tags: Radio kind
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