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CC2500: 使用不同天线设计的模块之前不能相互通信

Part Number: CC2500

2.4G 1mW贴片小模块(LSD4RF-21N51S00)_使用说明书.pdf

PDF档是一款用CC2500做的模块(为表述清楚,称之为旧模块),两个图片档同样用CC2500做的模块,只是天线和layout有区别(称之为新模块),新模块之间相互通信没有问题,新模块和老模块之间不能通信,SPI配置程序一致。请问这大概什么问题?