The NAV-7 has been designed to meet the requirements of IMO (Intentional Maritime Organisation) MSC.148 (77) and IEC technical standard 61097-6 (Ed 2.0). The NAV-7 has three separate receiver channels, one each tuned to 490 kHz, 518 kHz and 4209.5 kHz. The NAV-7 will receive on all three frequencies simultaneously in those parts of the world where transmissions are available (refer to Appendix 1). The NAV-7 can be set up to filter out stations and/or message categories that are not required by the User. The NAV-7 is capable of being connected to an Integrated Bridge System (IBS), transferring NAVTEX messages to other navigational aids if required. Note that the IBS must be compliant with the serial port requirements of IEC 61097-6 (Ed 2.0). The NAV-7 will accept UTC time & date information from the IBS port if available. UTC time & date will be used to timestamp received NAVTEX messages. Permanent installation of the NAV-7 can be made with either the bulkhead-mounting bracket or the flush panel mounting kit provided. The NAVTEX antenna should be mounted where it is elevated clear of metal objects in a location where it cannot easily be damaged.