CRC16

baseband.mark5b.header.CRC16 = 98309

CRC polynomial used for Mark 5B Headers, as a check on the time code.

x^16 + x^15 + x^2 + 1, i.e., 0x18005. See page 11 of https://www.haystack.mit.edu/tech/vlbi/mark5/docs/230.3.pdf (defined there for VLBA headers).

This is also CRC-16-IBM mentioned in https://en.wikipedia.org/wiki/Cyclic_redundancy_check