reply to Xstar_Lumini
Re: Okay Guys What The Hell Is This Contraption? That my friend is a remote radio unit. Essentially the same as a DAS, but this belongs to the Mobile phone operator.
The upper box is the radio, the lower box is a battery backup unit. The antenna is obvious.
They typically cover 3/4 mile or less, or about 1km. There should be a whole bunch of them around.