Maretron NMEA 2000 Network Bus Extender [NBE100-01]Network Bus Extender Part #: NBE100 01 Maretron's NBE100 (Network Bus Extender) allows you to extend the maximum node count, network trunk length and cumulative drop length of any NMEA 2000 network. The NBE100 solves bus errors and other electrical issues caused by exceeding any of these limitations and makes design of large networks easier. NMEA 2000 networks have a maximum of 50 nodes allowed on a single network, a maximum network trunk length of