Is the NBF-3 a direct replacement for the NBF-2?
The NBF-3 is a replacement for the NBF-2. The NBF-3 has the same functionality as the NBF-2 with the addition of a fused power output for powering the NMEA Talker device (that supplies the NBF-3 with data). The new case design allows for quicker and easier connections whilst keeping the electronics fully protected. The NBF-2 was retired from production at the end of 2013.