Description:-Increase your signal with this GPS external antenna with built in low noise amplifier (LNA).-The magnetic base allows you to conveniently attach it to to the surface.-Make good use of the GPS port on your surface Unit. Instantly have location and speed data on your navigation software. Specification:Connector: SMA MaleVoltage: 3-5 VoltWire Type: RG174Wire Diameter: 2.8mmLength: 1 Meters / 3.3 FeetLNA Gain(Without Cable): 42dBCenter Frequency: 1575.42 MHz(GPS); 1561 MHz(BD); 1602 MHz()Body Size: 56x51x18mm / 2.2x2.0x0.71 inch (L*W*H) Package Included:1 x GPS Active Antenna