Manufactured by Jirous in the Czech Republic, now available exclusively in Ireland from Irishwireless Please note: these antenna are only sold in pairs with a Jirous - GentleBOX JR-300 enclosure - Price is for a pair dual-polarized antenna, horizontal and vertical polarization the highest isolation! 53 dB only 1 antenna instead 2 save money for mast! extra high front to back ratio metallic collar assures increased isolation between antenna on mast = lower interference between links direction links for medium distance, also short in difficult conditions setting elevation (of gradient) and azimuth has independent adjustment VSWR and isolation are measured during the manufacture of every piece outdoor usage you can count attainable distance from section of calculation radom (plastic parabola cover) for each antenna free! Technical parameters Frequency range 5,45 - 5,9 GHz Gain 23,6