Changes to the National Traffic System – Fall 2025

Participants in National Traffic System® (NTS®) message nets will soon be noticing two changes in ARRL Radiograms. For the first time in 45 years, a new message “precedence,” or priority level, is being introduced, and the list of numbered “ARL” radiogram texts has been updated and expanded. The new “C,” or “CERTIFIED,” precedence joins the long-standing list of E (EMERGENCY), P (PRIORITY), W (WELFARE), and R (ROUTINE) message categories. It is to be used for unique messages to specific individuals with known contact information and must be delivered within 48 hours of origination. The “C” precedence may not be used for bulk messages, such as those sent to welcome new amateurs to the hobby. It is the first new precedence established since the WELFARE (W) category was introduced in 1980.

 

In addition, the list of standardized ARL Numbered Radiograms has been updated and expanded to keep up with changing technology and messaging needs during disasters and emergencies. The use of “ARL” in a message alerts the receiving operator to expect ARRL NUMBERED RADIOGRAM(s) in the message text. For example, the new ARL THIRTY FIVE is a shortened form of telling the recipient that the sender is “Evacuating to family member/friend’s house,” and ARL NINETY TWO is shorthand for “Widespread disruptions to internet service at this location.” There are many more new ARL Numbered Radiogram Texts. Anyone involved in traffic nets is encouraged to download the complete list from either the  or  (RRI).

 

The changes are part of ongoing efforts to modernize the National Traffic System and result from a memorandum of understanding establishing a closer working relationship between NTS and RRI. More details are available in the November issue of .