NavCom Sapphire Rev.J - Manual (Page 297)

Sapphire Technical Reference Manual Rev. J
297
2.52 NCTCD (Binary) and NCTCE (Binary)
SF-3050 Sapphire SF-3040
These messages require the L-Band ENC option. They can only be sent if SFSEARCHPOSB is
provided to the receiver at least once every 15 minutes.
2.53 Reserved