I recently picked up my first HDHR device, a Flex 4, and while I have been enjoying it I have also run into several issues with the official app (and with Plex Live TV though I am not sure how much of that is on the HDHR vs Plex).
My setup is as follows:
~20 miles from broadcast towers in a flat area, all due west of me. NBC, Fox, ABC, and CW are available via ATSC 3.0 and are not encrypted. Omnidirectional antenna into Flex 4k on latest firmware, hardwired to my local network. Signal strength for all channels is near 100%, quality at 100%, and symbol quality 100%. Not using any amplifiers or filters. I have the official HDHR app on Windows, two of my LG OLED TVs, my iPhone, and my Nvidia Shield TV connected to a Denon AVR in my home theater area.
The issues I am experiencing:
The app on the Shield TV cannot reliably tune to the ATSC 3.0 channels and gives a 'No Video Data' error. Tuning to another channel and then back a few times will eventually make it work. This issue is isolated to ATSC 3.0 channels so far. All 4 of my ATSC 3.0 channels are 100%, 100%, 100% when I view it in the web interface so I don't think it's a signal issue, though I am curious if it could be LTE/5G interference? Willing to grab a filter to test if necessary. The second issue is that ABC and Fox in particular, will sometimes have a consistent 'stutter' once every second on a cadence. Tuning away and back a few times will eventually fix this. Third issue, I have passthrough enabled to let my Denon AVR handle the audio processing, but my ATSC channels only get 2.0 audio (likely due to my AVR not supporting AC-4). To work around this, I set the app to output 7.1 audio. This does give me surround sound, but the volume of the audio is quite inconsistent, with moments where an audio channel or channels (especially noticeable on the center channel) will get very loud for a a second or so and then return to reasonable levels. LPCM audio works as expected with expected volume levels from my other devices that support outputting LPCM. The only way to get reliable audio from the HDHR app that works consistently across both ATSC 1.0 and 3.0 channels is to just set the app to output stereo. Not ideal for a home theater.
The app on iOS:
Experiences the same issue as the app on the Shield TV where ATSC 3.0 channels will show a 'No Video Data' error when tuning to them, which will eventually resolve itself by tuning back and forth a few times. Second issue is my local NBC affiliate broadcasts in HDR at all times on the ATSC 3.0 channel. The HDHR app on my other devices handles this correctly and puts the display into HDR mode and gives a fantastic picture. The app on iOS does not enable HDR and the picture is washed out (the HDR video being played on a non-HDR screen without tone-mapping look if you are familiar with it). Not a huge deal, I can just watch the ATSC 1.0 channel as a workaround. Would be nice to see this fixed though.
The app on LG webOS TVs:
Experiences the same issue as the app on the Shield TV where ATSC 3.0 channels will show a 'No Video Data' error when tuning to them, which will eventually resolve itself by tuning back and forth a few times.
Here is a excerpt from the system log showing the no video data error happening:
20251207-19:57:31 Tuner: tuner0 tuning 106.3 FOX28 (atsc3:527MHz-5006)
20251207-19:57:41 HTTP: rejecting request from 10.10.10.145 - no video data
20251207-19:57:41 Tuner: tuner0 http stream ended (requested time reached)
Sorry for the huge post and thanks in advance for any guidance you can provide me.
