In order to respond to the requirements of the Ministry of Industry and Commerce [2009] No. 666 for my country\'s digital walkie-talkie to achieve analog-to-digital conversion, and to facilitate enterprise production and debugging and reduce costs. A digital walkie-talkie CDMR (China Digital Mobile Radio) adapted to my country\'s national conditions was designed using the domestic baseband chip SCT3918. RF technical index tests, audio technical index tests, and reliability tests were conducted in the laboratory. The experimental results show that the RF technical index meets the requirements of the [2009] No. 666 document, and the audio technical index meets the \"General Technical Conditions for Mobile Communication FM Wireless Phones\". The design complies with my country\'s policy on analog-to-digital conversion of walkie-talkies, is suitable for my country\'s national conditions, and is convenient for enterprise production and debugging.
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