LGC-4000 GPS Receiver AntennaA mighty new 16-channel NMEA 2000 GPS+WAAS antenna scores high in superior sensitivity for signal acquisition, with incredible position accuracy. When connected with HDS models, it delivers a true satellite update rate of 5 times per second for the most accurate speed-over-ground readings. The LGC-4000 also features a new compact size that\'s easier to flush-mount from the top. Rugged for all marine environments and fully waterproof, an optional spat cone is available for pole mounting.A Lowrance N2K-EXP-RD-2 network starter kit is required to hook up to the HDS Series
