1,Frequency:824~894/1710~1990MHZ, 880~960/1710~1990MHZ, 1920~2170MHZ 2,Gain:2dBi 3,Certification:ROSH, CE, ISO9001:2000 3.Electrical Characteristics3.1 GSM AntennaForm 1No.ItemSpecifications1Frequency(MHz)824~960 MHz/1710~1990 MHz2V.S.W.R(in BW)≤2.0:13Gain(Zenith)2 dBi4Impedance50 Ω3.2 MechanicalForm 2No.ItemSpecification1CableRF1.13 or others2ConnectorIPEX or others3MountingInternal5. ...