GPS Receiver Antenna TNC Female Connector High Accuracy 4 Star Full Frequency Antenna for Agricultural Use DC3.316V1Small Measuring Error: In GPS measurement, the observed values are based on the phase center position of the receiving antenna, this antenna adopts single layer multi feed ultra wideband design, with the minimum phase center elevation difference. 2Good Reception Effect: The antenna unit has high gain and small gain roll off, which has a good reception effect on low elevation satellites signal, ensuring that satellites can still be collected normally in some severely obstructed situations. 3Low Noise Amplifier: External antenna has low noise amplifier, using pre filtering technology to effectively suppress out of band interference signal, improve reliability, and reduce the impact of multipath signals on accuracy through reactive power network suppression. 4IP68 Protection Grade: This antenna has IP68 protection grade, waterproof and dustproof, with 12.24kgf/cm shell overall compressive strength, and the UV resistance cover provide protection for long term outdoor work, ensuring high accuracy measurement. 5Wide Application: External full band measurement antenna, supporting for Beidou 2, for GPS, for GLONASS system satellites navigation signal reception, widely used in geodesy, oceanography, agriculture, deformation, navigation and locating, and other fields.