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Southwest Antennas Part # 1027-010 is a high-performance, ruggedized GPS Passive L1 Antenna designed for GPS receivers, man pack, hand-held, and small form factor radio systems. This antenna features an integrated 3.42 inch RF coaxial gooseneck assembly that allows for flexible antenna positioning. The gooseneck is sealed with Polyolefin heat shrink providing a waterproof seal to 20 meters / 65.6 ftFeatures:Quadrifilar Helical Antenna DesignExcellent Axial RatioGPS L1 frequency ±10.23 MHz bandwidthCapable of Receiving Clear GPS Signal in Congested and Noisy RF EnvironmentsSmall form factorUltra light-weight compact designExceptional pattern bandwidthGround plane independentNon-rotating black chrome SMA(m) RF connectorIntegrated RF coaxial gooseneck assembly with Polyolefin heat shrink sealWaterproof to 20 meters (65.6 ft.)ApplicationsNavigation systemsMilitary and securityManpack radiosHandheld radiosSmall form factor radiosLow profile vehicle mountsUnattended / Intelligent Munitions SystemsDismounted soldier-level communicationsUnmanned ground vehiclesI.E.D. recognition & destruction jamming systemsAsset trackingPrecision timingLBS & M2M applicationsOil & gas industriesLaw enforcementMobile computingUAV systemsProduct Specifications:Antenna Pattern: Hemispherical AntennaFrequency Band: GPS L1Impedance: 50 OhmsMinimum Frequency: 1,565 MHzMaximum Frequency: 1,585 MHzFrequency Bandwidth: 20 MHzMaximum VSWR: 2.0:1 ratioGain: 1.50 dBic ±0.5 dBAxial Ratio: 1.0 dBPolarization: RHCPHorizontal (AZ) Beamwidth: 140 degreesVertical (EL) Beamwidth: 140 degreesRadome Material: Delrin 527 UV stableColor: BlackGooseneck DesignGooseneck Length: 3.420 Inches (86.868 mm) ±.09" (including RF connector)RF Connector Type: SMA(m) Non-RotatingRF Connector Finish: Black ChromeIP Rating: IP67 (mated and unmated)