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CC1310 距离问题

Other Parts Discussed in Thread: CC1310, CC2530

请问我用 CC1310 433M频段 速率为500K 频偏250Khz BW = 1243Khz ,在非空旷的环境下测试,感觉测试效果跟zigbee cc2530相比差别不大,似乎没有体现433M传输距离远的优势,cc2530和cc1310都是不带PA的,cc1310在非空旷的环境中测试距离都在20m以内。信号灵敏度到-78左右就收不到了,板子的发射功率有测试过,的确是13dB,请问这样正常吗?