Having a hard time understanding this link problem

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i am not at all new to wireless and My data networks but just started using mikrotik.

Anyway i have this short link between 2 water towers and Los is ideal. One end reads 60db and the other is around 74. Why the difference of 14db, the antenna is 16. So is it a bad unit? Swapped one end with no luck. Exact same results. Will swap other end tomorrow morning probably.

And don’t say try a different channel. You do t thin I tried that already?