... dual/vertical/horizontal/circular 15years' manufacturer Antenna ( Base station antenna )GSM900MHzSingle polarization 90º 17dBiall kinds of ... Base station/microwave/UHF antennasCertificate:ROHS,ISOFrequency:800, ... array, directional, Yagi,directional,parabolic CDMA,GSM,UHF,GPS,etc.Polarization:dual/vertical/horizon/circularMOQ: as ...