ABCD four people: I am A, D can hear my signal, around 58. But he replied that I cannot hear it; the noise reduction is already so high that even ambient noise can be heard. However, BC who lives nearby can receive D's signal clearly. We tested at 438 and 431, and the results were the same. Why? My device ic705 1.2m Hua Hong on the roof. Please help me understand. Thank you.
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