Jiashan Jinchang Electron Co.,Ltd is one of the leading external 3g antenna manufacturers and suppliers, welcome to import 900/1800 mhz gsm antenna from our factory. 3G Antenna Advantage： Quality advantage：100% test, 5 test process during production, FA,singl time pass rate 99%, Technical advantage：high gain, low attenuation, signal receiving ability 30 engineers have helped us develop our current selection and trained our 200 production workers to ensure they stay on top of the latest technology. Product summary: The third generation mobile communication technology (3rd-generation, 3G) is a cellular mobile communication technology which supports high speed data transmission. 3G services can transmit voice and data information at the same time, the rate is generally more than a few hundred kbps. 3G is a new generation mobile communication system, which combines wireless communication and Internet, and so on. At present, there are four standards: CDMA2000, WCDMA, TD-SCDMA, WiMAX, 3G, and so on. For signal receiving，including frequency: GSM/CDMA/PCS/DCS/UMTS/WCDMA Characteristics:  It’s an omni-directional antenna Component element: PCB+ENCLOSURE+CABLE+CONNECTOR Parameter table: Antenna Frequency Range 824~960/1710~2170MHz Polarization Linear Gain 2dBi V.S.W.R ＜2.0 Impendance 50Ω PCB Dimension 104.6×15×1mm Mechanical Cable RG174 Connector FAKRA/SMA or others Radome Material ABS Mounting Method Adhesive Environmental Operating Temperature -40℃~+85℃ Relative Humidity Up to 95% Vibration 10 to 55Hz with 1.5mm amplitude 2hours Environmentally Friendly ROHS Compliant Remarks: Magnetic, adhesive, or screwing mouting as per customer’s installation requirement. Can meet your unique requirement, for example waterproof, salt spray proofing, UV protect and so on. Antenna operational matters needing attention: No metal sheet covers above the receiving direction antenna signal. Repairing and maintanance:  One year re-calling and lifetime maintenance as quliaty guarantee,. Package and shipment style: Plastic bag and carton package