This one is one from the antennas I use.
I have 4 or 5 of them and finally I have one free to tear apart.
Price was ~ 25 euros before 2 3 years.
They promised me 12 dbi and 120 degrees but diagram is more like 90 100 degrees.
Interesting pattern are found on the pcb board 
– it worked for me so there is no mater how it madded .
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