Short answer: ATSC 3.0, sold as NextGen TV, is the new US standard for free over-the-air broadcast TV. It can carry 4K HDR, Dolby Atmos sound and a sturdier signal, and it already reaches around three-quarters of US households. Your current TV and antenna won't suddenly stop working. The catch is encryption: many NextGen stations lock their signals with DRM, so a tuner that "supports ATSC 3.0" may still be unable to show some channels. Check DRM support before you buy anything.
At a glance
ATSC 3.0 NextGen TV
| What it is | New free-to-air TV standard |
| Coverage | Roughly 75% of US households |
| Old TVs | Still work, for now |
| New antenna needed? | No |
| Tuner boxes | About $100-$275 |
| Watch out for | DRM-encrypted channels |
What ATSC 3.0 changes
The US has used ATSC 1.0 for digital broadcast TV since the analogue switch-off in 2009. ATSC 3.0 replaces it with a system built on internet protocol, the same foundation as streaming.
Better picture. The standard supports 4K and HDR, though most stations still broadcast in 1080p HD with HDR on some content. Live 4K broadcasts remain occasional events rather than the norm.
Better sound. Dolby AC-4 audio, including Atmos, and dialogue enhancement that lets you raise voices over background noise.
Better reception. The signal is more robust indoors and on the move, which helps people who've struggled with pixelated pictures on the current standard.
Emergency alerts. Advanced alerts can carry maps, video and targeted local warnings, and in principle wake compatible devices.
Hybrid features. Because it's IP-based, broadcasts can be combined with internet content: start-over, on-demand extras and interactive guides, when the TV is also online.
Where the rollout stands
Stations in most large markets now broadcast in ATSC 3.0, and industry figures put coverage at around 75% of US households. During the transition, stations share their transmitters: typically one station in a market converts to 3.0 and hosts several networks' NextGen signals, while the others keep carrying everyone's 1.0 signals. That's why a NextGen channel line-up can look incomplete in some cities.
The rules are still in flux. In October 2025 the FCC proposed making the old 1.0 simulcast voluntary rather than required, and asked for comments on tuner requirements and on encryption. Broadcasters had asked for firm deadlines, 2028 for the largest 55 markets and 2030 for the rest, but the FCC's proposal favoured a market-by-market approach instead. When we checked, no final switch-off date had been set. Treat any article quoting a firm national cut-off date with caution.
Does your current TV still work?
Yes. Stations still broadcast in ATSC 1.0, and every TV sold in the US for years can receive it. Your antenna works for both standards: nothing about the antenna itself changes.
What could change over time is how many channels remain on 1.0, and in what quality. If simulcasting becomes voluntary, some stations may eventually drop 1.0 or reduce the number of channels carried on it. That's likely to happen gradually and market by market, not on one day. For an overview of how antenna TV compares with streaming, see our guide to OTA antenna vs IPTV.
The DRM problem
This is the part that catches people out.
ATSC 3.0 lets broadcasters encrypt their signals. Many have done so, using a system managed by a broadcaster-backed body, the ATSC 3.0 Security Authority (A3SA). Only devices it has approved can decode protected channels.
What this means in practice:
- NextGen TVs from major brands are generally approved and decode protected channels.
- Some external tuners are not. SiliconDust's HDHomeRun Flex 4K, for example, was sold as an ATSC 3.0 tuner but can only show unencrypted 3.0 channels, a limitation SiliconDust has publicly disputed with broadcasters.
- Some approved devices need an internet connection to fetch decryption licences, at least periodically. Others can decode offline. Check the specific model.
- Network sharing and recording are the areas most restricted. Watching on the TV that receives the signal is usually fine; sending it to other screens around the home often isn't, unless the device is specifically certified to do so.
Consumer groups and some device makers have asked the FCC to limit encryption on free broadcast TV. Broadcasters say it protects against piracy. The FCC has sought comment but, as of our check, not ruled.
NextGen TV tuners compared
If your TV lacks a NextGen tuner, an external box adds it. Prices are approximate US retail from 2026 and vary with promotions.
| Device | Approx. price | Encrypted channels | Notes |
|---|---|---|---|
| ADTH NextGen TV Box Gen 2 | About $120 | Yes | Budget option with basic DVR |
| Zinwell NextGen TV Box | About $150 | Yes | Simple set-top box, no multi-room |
| HDHomeRun Flex 4K | About $200 | No | Great network tuner for unencrypted signals |
| Zapperbox M1 | About $275 | Yes | Certified as a home gateway |
ADTH also sells a USB tuner for Android TV, Google TV and Fire TV devices that supports encrypted channels with an internet connection. Before buying any tuner, check the station list for your market on a site such as watchnextgentv.com and see which of your channels are encrypted.
Buying a TV with NextGen built in
Look for the NextGen TV logo. Several brands, including Samsung, LG, Sony and Hisense, have sold NextGen models, usually in mid-range and premium lines. Not every model in a range includes it, and some brands have dropped it from recent lines, partly because of the cost of the Dolby AC-4 audio licence. Check the specific model number, not just the brand.
A built-in tuner is the simplest way to get encrypted channels working, because approved TVs decode them directly.
Should you upgrade yet?
Upgrade now if your reception on the current standard is poor and a NextGen station covers you, or you want the dialogue-enhancement and Atmos audio, or you're buying a new TV anyway and a NextGen model costs little extra.
Wait if your antenna picture is fine, you rely on network tuners and DVRs that don't yet handle encryption, or your market's NextGen line-up is thin.
There's no urgency. The 1.0 signal isn't disappearing overnight, and prices and device support are still improving. If free local TV is the goal, our guide to local channels without cable covers the full set of options.
Quick answers
What is ATSC 3.0? The next-generation US broadcast TV standard, branded NextGen TV. It supports 4K HDR, better audio, stronger reception and advanced emergency alerts.
Do I need a new antenna for NextGen TV? No. Any antenna that receives your stations today works for ATSC 3.0.
Will my TV stop working? Not now. Stations still broadcast the current standard. Over time some may reduce it, but no national switch-off date has been set.
Is NextGen TV free? Yes. It's free over-the-air broadcasting, although you may need a compatible TV or tuner.
Why can't my tuner show some NextGen channels? Those channels are encrypted, and your device isn't approved to decode them. This affects some network tuners, including the HDHomeRun Flex 4K.
Is everything broadcast in 4K? No. Most NextGen broadcasts are 1080p, some with HDR. 4K is used for occasional events.
How do I know if NextGen TV is available where I live? Check the station finder at watchnextgentv.com, or your TV's channel scan if it has a NextGen tuner.
The FCC's ATSC 3.0 transition rules, broadcaster encryption practices, market coverage and tuner certifications are all still changing. Prices are approximate. Checked September 2026.