2pcs Vehicle Active External Navigation High Gain Satellite Positioning GPS Antenna 1. Cable length: 1.7 meters 2. Antenna gain: 28dB 3. Impedance: 50 ohms 4. Center frequency: 1575.42MHZ 5. Working voltage: 3-5V 6. Standing wave ratio: greater than or equal to 1.5 7. Wire: RG174 8. Applicable interface: external thread inner hole 9. Interface model: SMA elbow 10. Application fields: automobile 4S shop, car dealership, bus station announcer, rental company and individual, etc. 11. The glue fits closely to the installation, which is more firm 12. SMA interface, the inner thread and inner needle are all gold-plated, anti-oxidation 13. High-sensitivity GPS chip, faster and more accurate positioning, with super anti-interference ability 14. More sensitive and stable, not easy to age 15. Human-machine interconnection, fully compatible with various versions of car-machine interconnection 16. Weight: about 110 grams 17. Antenna size: 45x38x13.5mm