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The FPV’ers Antenna The SpiroNET 5.8GHz circular polarized patch antenna from ImmersionRC adds some serious range to 5.8GHz FPV systems. Available in RHCP, and LHCP variants. 5.8GHz Band, 13dBi gain 35 degree Beam Width (H+V) F/B Ratio > 35dB, VSWR < 1:1.35 @ Center Freq. Circular Polarization Fully protected against the elements Individually tested Greatly increase usable range compared with a traditional antenna