How can the NMEA Data Multiplexer reduce the congestion on my NMEA network?
Some NMEA instruments output a large number of NMEA sentences every period (usually 1-3 seconds), some of which are of no use to the average boat owner, and just clog up the NMEA network. GPS units are especially guilty of this and not all allow the user to reduce the number of unwanted sentences that are transmitted. Of those that do, the procedure can often be fiddly and time consuming.
