Search found 21 matches

by KU7PDX
Sun Jan 10, 2021 7:40 pm
Forum: ATSC 3.0 Forum
Topic: ATSC 3.0: Portland - Jan 2021
Replies: 10
Views: 372

Re: ATSC 3.0: Portland - Jan 2021

What do you mean "lighthouse mode" ? Right now in order to launch NextGen TV in the United States, the FCC did not grant broadcasters a second frequency to use, so broadcasters are collaborating to get it on the air. Here in Portland, we have two "lighthouse" transmitters, KRCW on UHF 33 and KPDX o...
by KU7PDX
Sun Jan 10, 2021 7:07 pm
Forum: ATSC 3.0 Forum
Topic: ATSC 3.0: Portland - Jan 2021
Replies: 10
Views: 372

Re: ATSC 3.0: Portland - Jan 2021

Since the Portland market is in an ATSC 3.0 "lighthouse" mode, there isn't the bandwidth available to any single station to broadcast 4K video. Those improvements will start showing up once we're able to each have our own ATSC 3.0 transmitters (and the ATSC 1.0 ones are discontinued).
by KU7PDX
Thu Dec 24, 2020 11:15 pm
Forum: ATSC 3.0 Forum
Topic: ATSC 3.0: Seattle / Tacoma - 2020
Replies: 133
Views: 8359

Re: ATSC 3.0: Seattle / Tacoma - Dec 15th launch

Don't know if anyone has tried figuring this out yet, but KUNS is broadcasting the STIRR Radio App as of 12/22 (I'm pretty sure they got it going on 12/21). Not sure how it would work on something like the new Quatro 4K though! https://sbgi.net/pr-news/one-media-3-0-launches-its-stirr-radio-app-in-s...
by KU7PDX
Thu Dec 24, 2020 11:11 pm
Forum: ATSC 3.0 Forum
Topic: AC-4 Audio?
Replies: 185
Views: 16894

Re: AC-4 Audio?

I'd suggest not buying the Roku Ultra 2020. I just got it today under the impression that it does support AC-4, but it doesn't work and I'm going to return the device immediately. I can confirm that the Roku Ultra 2020 does indeed support AC-4. Silicondust needs to update their Roku app to update t...
by KU7PDX
Fri Dec 04, 2020 11:26 am
Forum: ATSC 3.0 Forum
Topic: ATSC 3 PQ improvement ?
Replies: 11
Views: 789

Re: ATSC 3 PQ improvement ?

WOW. That is great info. Though, I though that the "theoretical: bandwidth of ATSC with HEVC is around 57 mbps. (I know it is less in practice maybe 26 ??) Why would the stations not use that max for their PLP 0 setting. The tradeoff is between bitrate and the level of signal needed to decode it. S...
by KU7PDX
Wed Dec 02, 2020 3:39 pm
Forum: ATSC 3.0 Forum
Topic: ATSC 3 PQ improvement ?
Replies: 11
Views: 789

Re: ATSC 3 PQ improvement ?

Picture Quality (PQ) is going to be heavily dependent on the how the PLP is configured for the broadcaster. For example, here in Portland KRCW's transmitter has a PLP 0 configured with QAM16 modulation at a maximum bitrate of 9 mbps. We call that the "robust" PLP as it will be more likely to be able...
by KU7PDX
Tue Nov 10, 2020 6:21 pm
Forum: ATSC 3.0 Forum
Topic: ATSC 3.0 Portland - 2020
Replies: 164
Views: 16089

Re: ATSC 3.0 Portland: QUATRO 4K

I wish the local stations would do a better job of communicating when they plan on starting to broadcast any programming in 4K. I am so curious to see the quality of the broadcast. As soon as the networks start broadcasting in 4K (ABC, CBS, NBC, Fox, PBS), you'll see it start coming to local market...
by KU7PDX
Thu Nov 05, 2020 2:16 pm
Forum: ATSC 3.0 Forum
Topic: ATSC 3.0 Portland - 2020
Replies: 164
Views: 16089

Re: ATSC 3.0 Portland: QUATRO 4K

KOXO-CD is "modulating" something, but I can't make heads or tails of what it is. My StreamScope XM isn't finding any data within it.
by KU7PDX
Thu Oct 29, 2020 8:30 pm
Forum: ATSC 3.0 Forum
Topic: ATSC 3.0 Portland - 2020
Replies: 164
Views: 16089

Re: ATSC 3.0 Portland: QUATRO 4K

I'm an engineer with KATU... As far as I'm aware, no changes were made to the KRCW or KPTV ATSC 3.0 transmissions. I lost the ATSC 3.0 channels after upgrading to the latest firmware.
by KU7PDX
Sat Oct 24, 2020 10:33 pm
Forum: ATSC 3.0 Forum
Topic: 23 Oct 2020
Replies: 20
Views: 2381

Re: 23 Oct 2020

Well, I'm in Portland and got the new HDHomeRun 20201023 app installed on my Windows 10 PC but I'm still not getting any audio on ATSC 3.0 stations. ATSC 1.0 stations have audio just fine though.
by KU7PDX
Fri Oct 16, 2020 12:35 pm
Forum: ATSC 3.0 Forum
Topic: ATSC 3.0 Portland - 2020
Replies: 164
Views: 16089

Re: ATSC 3.0 Portland: QUATRO 4K

New firmware is out. Got it loaded up and the NextGen TV transmissions are being detected now! When trying to use the latest Windows beta release of the HDHomeRun software, I'm receiving a "Unable to play channel: Resource error" message when trying to play any of the HEVC streams -- but it's defin...
by KU7PDX
Thu Oct 15, 2020 3:59 pm
Forum: ATSC 3.0 Forum
Topic: ATSC 3.0 Portland - 2020
Replies: 164
Views: 16089

Re: ATSC 3.0 Portland: QUATRO 4K

menkelis wrote: Thu Oct 15, 2020 3:05 pm Downloaded and rescanned.
Now showing HEVC icons on channels.
The Config-GUI is able to launch video player for
the atsc3 channel, no audio.
Subtitles are working.
NextGen TV uses AC-4 audio. I don't know when VLC will add AC-4 support. :(
by KU7PDX
Thu Oct 15, 2020 1:55 pm
Forum: ATSC 3.0 Forum
Topic: ATSC 3.0 Portland - 2020
Replies: 164
Views: 16089

Re: ATSC 3.0 Portland: QUATRO 4K

Out of curiosity, are there any stations around the country that are doing true 4K? Does each station need to upgrade their equipment? Is there equipment they share at the tower for 4K? Are the networks sending 4K streams to the stations for their programming, at least for live events like the Seat...
by KU7PDX
Thu Oct 15, 2020 8:25 am
Forum: ATSC 3.0 Forum
Topic: ATSC 3.0 Portland - 2020
Replies: 164
Views: 16089

Re: ATSC 3.0 Portland: QUATRO 4K

nickk wrote: Wed Oct 14, 2020 11:54 pm Problem is understood - the SPS header is hidden inside a stsd box in the mp4 init file.

Hopefully we will have firmware update out tomorrow (Thursday) to make it work.

Nick
Awesome, you guys are amazing! Thank you for your hard work!
by KU7PDX
Wed Oct 14, 2020 10:26 pm
Forum: ATSC 3.0 Forum
Topic: ATSC 3.0 Portland - 2020
Replies: 164
Views: 16089

Re: ATSC 3.0 Portland: QUATRO 4K

New firmware update out. The HDHomeRun will now detect the sub-channels correctly, however the HEVC video is missing SPS NALs so it won't play. I have a query into ATSC regarding this. Nick Hey Nick, I got the new firmware installed and I confirm that the HDHomeRun Config GUI is definitely detectin...