Trimble BD982 The BD982 comes with dual chips that support two antennas connected to the board. Independent observations from both antennas are passed to the processor where multi-constellation RTK baselines are computed. BD982 SupportTrimble BD982 DatasheetBD982 End of Life Announcement Description Description Trimble BD992 The Trimble BD992 dual-antenna, single board solution for precise position and heading.