NT–1800 REF Manual. WARRANTY i. WARRANTY. Japan Marina Co. Ltd. (JMC) warrants the NT–1800 NAVTEX Receiver and its active antenna ANT–200M against defects JMC NT-1800 NAVTEX Receiver. Featuring : High-end GMDSS model for SOLAS vessels,fully compliant with SOLAS Convention 74, IMO resolution MSC.148(77),IEC Jmc UTC OCC 2007 CORT R HRH OUCPBORRO 23-09B osnasucr ALL CHIPS IH UtCIHlTY LOOKOUT 002 paa4 101430 2007 BRT PAGE ENT Model NAVTEX Receiver NT-1800.