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National Traffic System™ (NTS™)

During disasters or other emergencies, radiograms are used to communicate information critical to saving lives or property, or to inquire about the health or welfare of a disaster victim.

To get involved with NTS
, find your local NTS affiliate on the air: ARRL Net Directory Search.


The NTS Methods and Practices Guidelines (NTS MPG) is presented as one single PDF document at this link.   The NTS MPG may also be found as an appendix to the NTS Manual that is referenced at the lower right portion of this page.


Guidelines for the ARRL NTS, traffic handlers and MARS (Military Auxiliary Radio System) communications excercise of October 2020. 

Traffic Handling Guidance  ;      ICS 213 Guidance




  • NTS PowerPoint

    Check out this PowerPoint on the National Traffic System (NTS) including an intro. to National Traffic System Digital (NTSD). Go Now

  • NTS Manual

    Read more about the purpose, policies, and procedures of the NTS. Go Now

  • Net Directory

    See how public-service nets that support the NTS™ have been registered with the directory database. Go Now

  • NTS ™ Forms

    Forms related to traffic handling and the National Traffic System™: ARRL Radiogram, FSD-3, FSD-89, FSD-125, & FSD-218. Go Now

  • NTS Digital

    Visit this website about the National Traffic System Digital (NTSD). Go Now

  • Instructors Guide

    This guide is written for the volunteers who are willing to train Amateur Radio operators about traffic handling. Go Now

Third Party Traffic

Find out which countries share a third party traffic agreement with the United States with the Third Party Traffic List.


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