本系统采用调频方式实现了主站至从站的单工语音及数据传输业务。发射机以单片机SPCE061A为核心，采用MC145151锁相环完成FM调制等功能；接收机采用CXA...

本系统采用调频方式实现了主站至从站的单工语音及数据传输业务。发射机以单片机SPCE061A为核心，采用MC145151锁相环完成FM调制等功能；接收机采用CXA1691完成FM解调功能；引入双音频编解码完成数据传输；利用市售红外遥控器实现了发射机英文字符的输入。-The system uses a frequency modulation approach to achieve the main points of the simplex from the station voice and data transmission. SPCE061A transmitter for a single-chip core, the MC145151 PLL FM modulation functions achieve receiver using FM demodulation functions achieve CXA1691 the introduction of dual-audio codec achieve data transmission the use of infrared remote control market implementation of the launching machine input English characters.

单工无线呼叫系统[2005年电子大赛一等奖].doc