Hi OM,
Thank you for publishing the design of the AMOS antenna. I Just finished building one. As far as I can tell, it works 'as advertised'. The VSWR ~ 1:1.3 and the gain is comparable with another 12.6dBi Wifi antenna in my posession.
I Posted your design on a Dutch Forum "Wireless Nederland": http://forum.wirelessnederland.nl/viewtopic.php?t=7428&highlight= - there is a lot of interest to build this antenna.
Your antenne on mt workbench mounted on a homebrew VSWR meter
You antenna on a tripod. The antenna has a female N receptacle. The other 'stuff' attached to it is the sensor for the VSWR bridge (see my page: http://home.wanadoo.nl/erwin.gijzen/wifiswr/)
I Think that the AMOS antenna is a great design, very easy to build with your drawings and photos (I can not read Serbian..). Thank!
73 de PE2ER (Erwin Gijzen - the Netherlands)