The basic parts of the BFSK transmitter are the preamble and the data input circuit. The preamble sequence is positioned in front of each packet of 122 bits for a total of 128 bits packet. The main purpose of the preamble is to facilitate the recepti

Si4421（433M无线收发模块）打包资料, 包括中文手册，中文资料，例子程序，基本电路，模块设计参数及图片。-Si4421 (433M wireless transceiver module) package of information, including the Chinese manual, the Chinese data, example programs, basic circuit module design parameters and photo.