Thank you so much for your insights. I believe there was a misunderstanding or I did not explain correctly my problem. I mentioned FM radio stations because, at my place in NY City’s suburbia, I have good reception of FM. Three days ago I noticed, that all of the FM stations were taken by interference from some source that so far I haven’t been able to pinpoint. I decided to check the TCL Roku TV that I have had for some 18 months and the interference was present over various channels, the strongest being channels 7, 9, 11 and 13. I kept monitoring the situation, hearing to the FM through earphones and watching the TV channels. The moment the interference stopped over the FM was the exact moment when the TV stations returned to normal. Later in the day, the same situation occurred and it has been re-occurring in the same pattern, mostly in the early morning (6:30/8:00) and early evening (6:30/8:30 or a little later).
I’m considering taking the matter to the FCC, for the interference must be in breach of some of its regulations.
Do you have any suggestions for me regarding this unusual problem?
Once again, thank you for your interest in my problem and for your kind answer