With GNSS you are able to know where you are, where you're going, and how to get there anywhere on Earth within 30 seconds. This means the higher the accuracy the better! GNSS Real Time Kinematics (RTK) has mastered dialing in the accuracy of their GPS, GLONASS, Galileo, and BeiDou constellation modules to just millimeters. The SparkFun GNSS-RTK Accessory Kit gives you just what you need to start using your RTK board for your project. | Includes: 1x GNSS Magnetic Mount Antenna, 1x Antenna Ground Plate, 1x Reversible USB A to USB C cable | Antenna: Frequency: L1 Band: 1559-1606MHz, L2/L5 Band: 1197-1249MHz; Peak gain (over 15cm diameter ground plane): L1 Band: 3.5dBic, L2/L5 Band: 0-2.0dBic; VSWR: max. 2, Bandwidth: min. 200MHz | Impedance: 50 Ohm, Polarization RHCP, Supports GPS, GLONASS, Galileo, and BeiDou, 5m coaxial cable with SMA connector, Magnetic base, fixed installation option (screw mount, 2 x M4 screws), Dimensions: 60.0mm x 82.0mm x 22.5mm, Weight: 175g (including cable) | Ground Plate: Diameter: 4 Inches, Thickness: 1/16", Weight: 0.4211 lbs, Center Thread: 1/4-20 UNC Thread, Finish: Industrial; USB: Reversible USB-A connector, Reversible USB-C connector, 0.8 meter cable length