This page is dedicated to the development of an RTCM3 Navigation data frames (NDF) message for the transport of raw GNSS messages.

== Message header ==
||=Data field=||=DF NUMBER=||=DATA TYPE=||=NO. OF BITS=||=NOTES=||
|| Message Number || DF002 || uint12 || 12 || 4075 (proprietary number for this purpose) ||
|| Reference Station ID || DF003 || uint12 || 12 || stream identification ||
|| Reserved field 1 || || uint2 || 2 || reserved bits, maybe used to separate different type 4075 message, always 0 for NDF ||
|| Frame Count (FC) || || uint6 || 6 || Number of frame entries to follow ||
|| Frame Data || || || depends on FC and frame size || frame data according to following table ||

== Frame Entry ==

||=Data field=||=DF NUMBER=||=DATA TYPE=||=NO. OF BITS=||=NOTES=||