Nct5b (binary) – NavCom Sapphire Rev.J User Manual
Page 291

Sapphire Technical Reference Manual Rev. J
291
2.42 NCT5B (Binary)
SF-3050
Sapphire
SF-3040
This output message is used to send the RTK corrections from the RTK base site to the rover
receiver. Refer to Chapter 3 Legacy Starlight Proprietary RTK Correction Messages.
This block extends the range of the corrections from +/-256 to +/-4096. The block
length is the same as the RTK correction block 1 (0x5e).
To use Sapphire as a base and a NCT 2100D product (e.g., SF-2050) as rover,
configure Sapphire to output the NCT5B message. The NCT5B message provides
the same navigation performance as the Starlight 0x5B or 0x5E message, based
on the hardware configuration (NCT-2000D or NCT-2100D respectively).
Additional information may be available for key channel partners and will require a
Non-Disclosure Agreement with NavCom. Contact NavCom Customer Support at
If Survey position is greater than 1 km from navigation solution, the RTK correction
blocks (0x5b/0x5e) will not be output. Furthermore, the message 0x5c, the RTK
reference position block, will be output with an unhealthy indication and a site id of
0xffff.