Product Name: Free Sample High Quality High Gain GSM Antenna Model NO.: jcg021 VSWR: 1.5~2 Usage: Communication Antenna, Car Antenna Size: D25*55*1mm Specification: D10.4x55mm Product Description Gsm high gain antenna1. Electrical Characteristics1.1 GSM AntennaSpecifications1.Frequency(MHz): 824~894 MHz/1710~1990 MHz 880~960 MHz/1710~1990 MHz 1920~2170 MHz2.V. S. W. R(in BW ): ≤ 2.0: 13.Gain(Zenith): 2 dBi4.Polarization: Vertical5.Impedance: 50 Ω1.2 MechanicalSpecification1.Cable—2.Connector: SMA3.Plastic Housing: Blackmeet various requirements for you.2.Connector: SMA3.Plastic Housing: Black