Difficult to say.Certainly the things are more easy with the 16 km, but also the visibility play his role for the other side and is relative easy to be spotted at long range.Sometimes the thing is not so realistic, I have detected with the UZO targets at 21 km in a very dark night, long before the watchman.Yes, that was maybe a little second but that give me a idea of the heading and distance of the target.
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