Tetrapak Slotted Waveguide antenna
Pictures
Dimensions
Calculate the dimensions with the XLS file here.
N connector
Put an N connector to it.
Aluminium tape
Put aluminium tape to connect the boxes.
Weather resistant
Put it in a plastic bag. Or even PVC tube.
Fixation
Fiber glass mast at 5EUR.
Other versions
See my other prototype made out of printing offset aluminium sheets:
A french radio-amateur is putting the tape in the middle of the guide, where the impact on the performance is minimal:
Check also this one made in Thailand (64 slots, 27 dBi), crazzy stuff: