main functions

       built-in gnss module, support gps, glonas, sbas satellite-based augmentation system  

       (waas/egnos/msas/gagan)

       small size for easy installation

　　nmea formats (in): rmc, gga, gns, gll vt g

　　nmea formats (out): dsc, dse, rmc, gsa, gsv

　　dual receiver, independent dsc dedicated receiver

　　manually input gps latitude and longitude and time

　　ipx7 waterproof construction (1m depth of water for 30 minutes)

　　speaker vibration draining function

　　weathe r channel alarm

　　dual/tri-watch functions

　　scan: normal scan and priority scan

　　dsc call reception and transmission records can be queried

　　standard nmea interface (rs-422 protocol)

　　full dot matrix display

　　channel number display digits selectable: 3 digits(01b)/ 4 digits(2001)

　　simple combination of arrow keys and programmable soft keys for smooth operation

　　support latest marine channel standards and dsc protocol standards. 

       dsc distress cals in 11 categories,all dsc calls in 3 security categories