em-trak B923 Class B AIS Transceiver w/VHF Splitter - 2W CSTDMAB923 Class B AIS Transceiver with VHF Splitter 2W CSTDMA **As the FCC requires all units sold in the US to be programmed by a qualified technician. Please submit the form below for programming at the time of purchase. A copy of the MMSI registration or FCC Ship Station License is required along with the vessel master or owner's signature on the completed programming form.** Click here to download form. Get the most from your on the water experience