请问,为什么我把功率提高了,两个模块就不能通信了?

即把:INT8U PaTabel[8] = {0x60 ,0x60 ,0x60 ,0x60 ,0x60 ,0x60 ,0x60 ,0x60};

改成:INT8U PaTabel[8] = {0xC0 ,0xC0 ,0xC0 ,0xC0 ,0xC0 ,0xC0 ,0xC0 ,0xC0};

0X84都是可以的通信的,0XC6到0XC0就不行了。请问是不是硬件的问题?