A/300, “ATSC 3.0 System”Approved: 14 April 2026

This Standard describes the ATSC 3.0 digital television system. ATSC 3.0 is a suite of voluntary technical Standards and Recommended Practices that is fundamentally different from predecessor ATSC systems and is therefore largely incompatible with them. This divergence from earlier design is intended to allow substantial improvements in performance, functionality, and efficiency sufficient to warrant implementation of a non-backwards-compatible system. With higher capacity to deliver Ultra High-Definition services, robust reception on a wide range of devices, improved efficiency, IP transport, advanced emergency alerting, personalization features, and interactive capability, the ATSC 3.0 Standard provides much more capability than previous generations of terrestrial broadcasting. This document describes the complete ATSC 3.0 Standard, which encompasses a set of individual standards documents, the interworking of which is described therein.

Download current version: A/300:2026-04, “ATSC 3.0 System,” approved 14 April 2026.

Previous Versions

There are multiple versions of this document. Please be sure to download the desired version. For amendments, the text includes a list of changes, the rationale for the changes, and compatibility considerations. The following documents are listed by date, with the most recent first.

2025

Download A/300:2025-07, “ATSC 3.0 System,” approved 17 July 2025.

2024

Download A/300:2024-04, “ATSC 3.0 System,” approved 3 April 2024. A ZIP file is provided that includes the A/300:2024-04 Standard and all ATSC documents that are normatively referenced in A/300:2024-04.

A Spanish language version of A/300:2024-04 is available for download. Note that this document is a translation of the Standard and has not gone through the usual ATSC review process. A/300:2024-04 (available above) is the authoritative Standard.

2023

Download A/300:2023-03, “ATSC 3.0 System,” approved 28 March 2023. A ZIP file is provided that includes the A/300:2023-03 Standard and all ATSC documents that are normatively referenced in A/300:2023-03.

2022

Download A/300:2022-04, “ATSC 3.0 System,” approved 8 April 2022. A ZIP file is provided that includes the A/300:2022-04 Standard and all ATSC documents that are normatively referenced in A/300:2022-04.

2021

Download A/300:2021, “ATSC 3.0 System,” approved 7 July 2021. A zip file is provided that includes the A/300 Standard and all ATSC documents that are normatively referenced in A/300:2021.

2020

Download A/300:2020, “ATSC 3.0 System,” approved 15 May 2020. A zip file is provided that includes the A/300 Standard and all ATSC documents that are normatively referenced in A/300:2020.

2019

Download A/300:2019, “ATSC 3.0 System,” approved 17 September 2019. A zip file is provided that includes the A/300 Standard and all ATSC documents that are normatively referenced in A/300:2019.