GSM antennawith Low Price, Good Performance, High Quality, Prompt Delivery, Small Orders Accepted, International Approvals. 1.Dimension(mm): 17*11*2 2.Center Frequency(MHz): 900MHz,1800MHz 3.V.S.W.R.: 1.5 4.Band Width(MHz): 30MHz,100MHz 5.Gain: 0dB,2dB 6.Impendence (Ω): 50 7.Polarization: LINEAR 8.Frequency Temperature Coefficient(ppm/°C): 10 9.Application: GSM,GPRS,CDMA Electrical specification can be customized.