1. Introduction of VK2828U10G5LF. VK2828U10G5LFis a high-performance, multi system navigation and positioning module. The module adopts M10 standard precision GNSS platform, which has faster positioning, higher precision, lower power consumption and more reliable product performance. VK2828U10G5LF supports concurrent reception of four GNSS (GPS, GLONASS, Galilco, and BeiDou). The high number of visible satellites enables the receiver to select the signals. This maximizes the position availability, in particular under challenging conditions such as in deep urban canyons. Super-S(Super-Signal) technology offers great RFsensitivity and can improve the dynamic position accuracy with small antcnnas or in non--of-sight scenarios. Industry standard GPS antenna of 25 x 25 x 4mm, with high sensitivity. High-precision TCXO of KDS 0.5PPM. Built-in SQI flash to set the parameters as required Built-inRTC crystal and capacitors to start quickly Built-in LNA. Optional frequency of data refreshing: 1Hz-10Hz Supports A-GPS service: Assist Now Online and Assist Now Offline Hybrid engine: GPS, GLONASS, , and BeiDou(WAAS, EGNOS, MSAS, GAGAN) Module Property Chip:UBX-M10050-KB C/A (Data Rate):1.023MHz Receiving Channel:56 511SWR:1.3 521SWR:1.3 S21 Log :20db S115mith:5010% Positioning Property Horizontal Position:Autonnmous Less than 2,5m an average, SBAS Less than 2.0m on average Speed: Less than 0.1m/s Direction: Timing Accuracy:30ns Coordinate System:-84 Max Height:50km Max Speed:500m/s Actelerate: Electrical Property Sensitivity:Tracking:-162dBm:Capturing:-160dBm:Cold Start:-148dBe Cold Start:26 seconds on average Warm Start:24 seconds on average Hot Start:I second on average AGPS:3 seconds Working ronment:40to 85 Other Parameters Clock Pulse:0.25-1KHz Updating Frequency:1-10Hz UART/TTL:YES Color: Green Material: PCB Package Contents: 1 x Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.