Only NMEA 0183 DSC and DSE sentences are supported at the moment. When this was implemented there were no NMEA 2000 radios to test with at all and we haven’t found a sample since. However, if you could send an Electronics.log file to support@rosepoint.com that contain an NMEA 2000 DSC message (PGN 129808), we can probably get support added pretty quickly. (This post explains how to get access the Electronics.log.)