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| RS40/RS40-B User Guide
Trademarks
Navico® is a registered trademarks of Navico Holding AS.
SIMRAD® is a registered trademark of Kongsberg Maritime AS,
Licensed to Navico Holding AS.
NMEA® and NMEA 2000® are registered trademarks of the National
Marine Electronics Association.
®Reg. U.S. Pat. & Tm. Off, and ™ common law marks.
Visit www.navico.com/intellectual-property to review the global trademark
rights and accreditations for Navico Holding AS and other entities.
DSC (Digital Selective Calling)
Digital Selective Calling offers significant safety and convenience
advantages over older VHF radios without this functionality.
• A valid USER MMSI must be entered into this radio before DSC
functions can be used.
• Many countries do not have radio repeaters that support DSC
message relaying. However DSC can still be useful for direct ship-to-
ship communication, where the other vessel is also equipped with a
DSC capable radio.
• DSC distress calls generated by this radio are limited to the same
range restrictions that apply to regular VHF transmissions. The
vessel sending a distress can only rely upon DSC if within range of a
GMDSS Coast Radio Station. Typical VHF range may be about 20NM,
though this varies greatly depending upon installation, antenna
type, meteorological conditions, etc.
ATIS (Automatic Transmitter Identication
System)
• ATIS is required for vessels making VHF transmissions whilst on the
inland waterways of the Regional Arrangement Concerning the
Radiotelephone Service on Inland Waterways (RAINWAT) signatory
countries.
• RAINWAT is an agreement to implement common principles and
rules for the safe carriage of people and goods on Inland Waterways.
• The signatory countries are: Austria, Belgium, Bulgaria, Croatia, the
Czech Republic, France, Germany, Hungary, Luxembourg, Moldova,
Montenegro, the Netherlands, Poland, Romania, Serbia, the Slovak
Republic and Switzerland.
• Where a VHF is required on the inland waterways of the signatory
countries, this must be capable of ATIS transmissions, and have the