RTCM Published Standards & Publications

• All RTCM Members have access to RTCM's Published standards for free as part of their Organization's Annual Membership dues.  If you are a current RTCM member, please email [email protected] with your publication request.  

• For non-members, you may access and purchase RTCM's published standards in RTCM's online Publication Portal and Store.  A new window will open in your browser and bring you to RTCM's online Store.  

• Requests for clarifications of any standard or reports of potential issues with any standard may be sent via email to [email protected].

• For information on how to become an RTCM Member, click here

RTCM has published globally accepted standards for maritime navigation equipment, maritime communication equipment, distress alerting devices, and satellite positioning and navigation systems such as GPS to facilitate all modes of transportation, surveying, geodesy, precision agriculture, and autonomous vehicles, ensuring vital high integrity and centimeter-accuracy capabilities.  

RTCM has Publications for the following Categories (click on link below to go directly to that category in our online Store):

• DIFFERENTIAL GLOBAL NAVIGATION SATELLITE (DGNSS) STANDARDS

• Tables related to RTCM Standard 10403.4 (December 01, 2023) are available for download in .csv format for:
• Assigned Proprietary Message Types (Table 3.6-1)
  
• SSR Provider IDs (DF414)
  
• Useful Guides for Implementation of and complying with RTCM Standard 13500.1  (September 6, 2023)
• Header Generation Example
• Payload Generation Example

• MARITIME COMMUNICATION STANDARDS

• MARITIME NAVIGATION EQUIPMENT STANDARDS

• STANDARDS FOR DISTRESS ALERTING DEVICES

• Scenarios for Testing GPS Receivers in Distress Alerting Devices
• Land Scenarios Downloadable Table
• Maritime Scenarios Downloadable Table

• RTCM ANNUAL MEETING & CONFERENCE RECORDS

   If you are interested in seeing our Complete list of Published Standards for purchase, CLICK HERE

The current technical standards developed by the Special Committees include:

• RTCM Recommended Minimum Standards for Digital Selective Calling (DSC) Equipment Providing Minimum Distress and Safety Capability, Version 1.0 (RTCM Paper 56-95/SC101-STD)“ This standard is referenced in the regulations of the U.S. Federal Communications Commission and defines minimum functions for DSC transceivers used in the U.S.

• RTCM 10150.0, Standard for VHF-FM Portable Marine Radiotelephone Equipment with Digital Selective Calling (DSC) and Global Navigation Satellite System (GNSS) Location Function

• RTCM 10402.3, RTCM Recommended Standards for Differential GNSS (Global Navigation Satellite Systems) Service, Version 2.3“ This standard is used around the world for differential satellite navigation systems, both maritime and terrestrial.

• RTCM 10403.3, Differential GNSS (Global Navigation Satellite Systems) Services - Version 3 + Amendment 2 (May 20, 2021) - A more efficient alternative to RTCM 10402.3

• RTCM 10410.1, Standard for Networked Transport of RTCM via Internet Protocol (Ntrip) - An application-level protocol that supports streaming Global Navigation Satellite System (GNSS) data over the Internet.

• RTCM 10401.2, Standard for Differential Navstar GPS Reference Stations and Integrity Monitors (RSIM) - A companion to RTCM 10402.3, this standard addresses the performance requirements for the equipment which broadcasts DGNSS corrections.

• RTCM 10900.7 RTCM Standard for Electronic Chart Systems (ECS) - A new edition of RTCM’s ECS standard, it defines requirements for Electronic Chart Systems which are not intended to meet the international requirements of the Safety of Life at Sea Convention (SOLAS), and includes certain voyage data recording functions.

• RTCM 11000.5, Standard for 406 MHz Satellite Emergency Position-Indicating Radiobeacons (EPIRBs).  RTCM published its latest version, RTCM 11000.5 on October 11, 2021, to align the standard with IEC and ensure compliance with international requirements taking effect on 01 July 2022.  RTCM petitioned the FCC to modify 47 CFR Part 80 to update the references to the latest standard, RTCM 11000.5.  Until the FCC rules are updated per the petition, devices must comply with RTCM 11000.3.  However, the FCC has approved waiver requests by the beacon manufacturers to allow their modern EPIRBs to be used in the U.S.  Device users should check with their manufacturer to ensure their device is compliant in the U.S.

• RTCM 11010.4, Standard for 406 MHz Satellite Personal Locator Beacons (PLBs) is closely related to the previous standard and was published on June 1, 2022.   However RTCM 11010.2 is still referenced in the 47 CFR Part 95 regulations of the U.S. Federal Communications Commission and defines performance requirements for PLBs used in the U.S., primarily in terrestrial applications.  Updates to the CFR references to cite the most recent versions are pending FCC approval.   In the meantime, the FCC will consider waiver requests by the beacon manufacturers to allow their modern PLBs to be used in the U.S.  Device users should check with their manufacturer to ensure their device is compliant in the U.S.

• RTCM 11020.1, Standard for Ship Security Alert Systems (SSAS) using the Cospas-Sarsat System, Version 1.0 (RTCM Paper 110-2004/SC110-STD) - Minimum requirements for the functional requirements and technical performance of maritime satellite Ship Security Alert Systems (SSAS) operating in the 406 MHz band through the Cospas-Sarsat satellite system.

• RTCM 11701.0, Standard for Installed Maritime VHF Radiotelephone Equipment Operating in High Level Electromagnetic Environments (RTCM Paper 87-99/SC117-STD)“ Defines a test program to demonstrate satisfactory operation of INSTALLED VHF radios in areas where they might be susceptible to interference from other radio frequency devices, such as pagers.

• RTCM 11702.0, Standard for Portable Maritime VHF Radiotelephone Equipment Operating in High Level Electromagnetic Environments“ Defines a test program to demonstrate satisfactory operation of PORTABLE VHF radios in areas where they might be susceptible to interference from other radio frequency devices, such as pagers.

• RTCM 11901.1, Standard for Maritime Survivor Locating Devices (MSLD) Addresses the several ways in which man-overboard devices can operate.

• RTCM 12100.1, Standard for Creation and Qualification of Application-Specific Messages (ASM), June 7, 2022.  

• RTCM 12301.1, Standard for VHF-FM Digital Small Message Services - Specifies the minimum functional and technical requirements for VHF-FM Digital Small Message Services (VDSMS). VDSMS are intended to provide for short messaging from ship-to-ship, shore-to-ship and ship-to shore

• RTCM 12800.0, Standard for Satellite Emergency Notification Devices (SEND) - Contains minimum requirements for the functional and technical performance of Satellite Emergency Notification Devices (SENDs) operating over any satellite system except Cospas-Sarsat.

• RTCM 13200.0, Standard for Electronic Visual Distress Signal Devices (eVDSD), June 21, 2018

• RTCM 13300.0, Standard for Internet-Based Automatic Identification System Services (AIS-i), July 11, 2019

• RTCM 13500.1, Standard for the Radio Layer for Real-Time DGNSS Applications - enables radios communicating in real-time kinematic (RTK) environments to be used interoperably regardless of the brands, September 6, 2023.

• RTCM 13700.0, Standard for Electromagnetic Compatibility Requirements for Light Emitting Diode (LED) Devices and Other Electrical and Electronic Equipment in the Vicinity of Shipboard Antennas for the Protection of Onboard Receivers.