https://tvnewscheck.com/article/top-news/251746/seven-portland-or-stations-launch-atsc-3-0/
The Portland stations are starting to air on ATSC 3.0.
Seven television stations in Portland, Ore. (DMA 22) — KATU (ABC), KOIN (CBS), KGW (NBC), KPTV (Fox), KOPB (PBS), KRCW (CW) and KPDX (MNT) — on Tuesday began broadcasting with NextGen TV or ATSC 3.0.
Based on the same fundamental technology as the Internet, digital applications, and other web services, NextGen TV can support a wide range of features currently in development, such as immersive audio and video (up to 4K), broadcasting to mobile devices, personalized viewing tools, and advanced emergency alerts providing rich media instead of simple text messages.
NextGen TV also allows full integration with 5G and other broadband-delivered Internet content.
The Portland stations are starting to air on ATSC 3.0.