I don’t know if this is a Dish issue or an NBC issue. But for the past several weeks (or months), I’ve noticed a weird hissing sound on some of the NBC prime time shows. Especially the Chicago shows (fire, Med, PD). You don’t hear it when the actors are talking. It’s when background music is playing. I especially notice it at the beginning of the episodes when they’re showing the “previously on” portion. It’s a really annoying hum or hiss. Has anyone else noticed this?
Check the ota signal and see if it has a hissing sound too. If so call the Station itself and report it to the engineer. I have my ota stations in my area on my cell phone and just call them up and they can fix most issues or tell you what is going on. My local ota CBS/CW/Fox station transmitted by one station KFDM, had issues for like 3 months. There would be pixelation, distortions and drop outs and when Vanna White would walk down the board to turn the letters there would be ghost versions behind her. It was crazy. I could see it on Youtube tv and on DISH satellite locals too.
I filed a complaint with the FCC . They said to contact the station itself. So I called up to KFDM engineer and talked to him. I told him out right that I had filed the complaint and I was told to talk to the station so what is the problem? He told me that the encoders were going out and they were waiting on them to come in and it was a "supply chain issue". I asked how long till you get them and he said he hoped 2 weeks. By the first of April the problems were gone. So it only took 5 days after I complained to the FCC and talked to the engineer to fix the problems.
IF the ota station takes care of the issues, you should see the same on DISH satellite locals since they are getting a fiber feed from the station itself . IF that isn't the problem then you can try to complain to DISH itself ,but since they split off DISH Network from the Echostar portion of the company , they no longer maintain the
dishquality@echostar.com email address that we used for all audio/video complaints we had with the satellite channels and locals over satellite.