can receive signals in GPS, GLONASS, Galileo and Beidou frequency bands. The antenna has the characteristics of high gain, good gain at low elevation angles, wide-angle circular polarization, and stable phase center. It is suitable for four-, high-precision surveying and mapping fields, and is widely used in geodetic surveying, road construction, ocean survey, terminal container operations and other occasions.<br> The antenna part adopts a multi-feed point design to ensure that the phase center and the geometric center coincide, minimizing the of the antenna on measurement errors;<br> The antenna unit has high gain and beam width in the pattern, which ensures the reception of signals at low elevation angles and can still search for stars normally under some serious obstruction conditions;<br> High and low temperature resistance, waterproof, anti- cover to protect the antenna<br> Type:A:antenna+M90SD+cable SMA<br> Color:As Shown<br> Material:Plastic<br> Working frequency: GPSL1/L2 BeiDouB1/B2/B3 GLONASSG1/G2 GalileoE1/E5b<br> Polarization type: RHCP<br> Impedance: 50Ω<br> Horizontal coverage angle: 360°<br> Output standing wave ratio: less than equal 1.5<br> Antenna AR: less than equal 3dB<br> Phase center error: less than equal 3mm<br> Low Noise Amp lifier Specifications<br> LNA gain: 40±2dB<br> Noise figure: less than equal 1.5dB<br> Output standing wave ratio: less than equal 1.5<br> Working voltage: +3V-+16V<br> Working current: less than equal 50mA<br> Connector: TNC-K (female)<br> Antenna size (mm): Ф151.6mmx63mm<br> Working temperature (℃) -40℃: -+70℃<br> Storage temperature (℃) -55℃: -+85℃<br> Waterproof grade: IP67<br> Package Contents:<br> 1x antenna<br> 1x M90SD magnetic base<br> 1x 5m signal cable<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The mea