Found on http://www.zero13wireless.net/foro/showthread.php?t=3964
I cant find original site of this antenna there is links on Zero13wireless forum.
I cut a lot of coax without any success before time in attempt to make a coax omni antenna.
This thing here is looking different. But maybe will work.
This is the idea :
30mm in the beginig 1/4 wave - may be patching section.
40 mm of outer of coax is used to dephaseing sections.
60 mm sections as 1/2 wave radiators.
And that is.