I have a copy of NMEA 0183 Versions 2.30 and 3.00. I will send any specific information on a sentence or sentence structure, however I will not copy a complete page. This is a copyrighted document of about 100 pages and NMEA still sells the document. Jim Conley N0OBG -- The heart of the wise inclines to the right, but the heart of the fool to the left. Eccl 10:2 (NIV)