The GPS modified boards are designed to work primarily with the Rockwell Collins GPS receiver with a data rate of 76.8 Kbps. The modification is necessary because 76.8 Kbps is not a standard baud rate. To get 76.8 Kbps select 115.2 Kbps as your data rate in the SeaCOM driver. This will result in an actual data rate of 76.8 Kbps. For a more detailed description of the two GPS modifications, download the GPS instructions, below. If you would like to order a GPS modified board, contact your sales representative for a quote.