D Logs Summary
190 MiLLennium GPSCard SW Version 4.503/4.52 Command Descriptions Manual Rev 2
RASB

Format: Message ID = 66 Message byte count = 40 + (n * 32)

Note: Variable Length = 40 + (n * 32). Maximum = 40 + (50 * 32) = 1640. Typical size (31 subframes) = 1032 bytes.
Field # Data Bytes Format Units Offset
1Sync 3char 0
Checksum 1char 3
Message ID 4integer 4
Message byte count 4integer 8
2Week data received 4integer weeks 12
3Approximate seconds into week data received 8double seconds 16
4Almanac reference week 4integer weeks 24
5Almanac reference seconds 4integer seconds 28
6PRN of satellite from which data originated 4integer 32
7Number of subframes to follow 4integer 36
8Subframe number 1char 40
9Page number 1char 41
10... Next PRN offset = 40 + (obs *32)