So some contractor came in and install a OTA antenna. The antenna works. Then I began to noise some static noise coming out frommy home theater speaker. Then I started to pay antenntion and notice all of my speakers (computer, iPod dock, even laptop that is not connected to power or network) has this kind of noise. The noise increase as I turn up the volume. I googled and found it may be a ground loop problem. I called the contractor and he said he grounded both the mast and the coax cable.
I disconnected the OTA antenna from the distribution splitter in the basement. So right now the antenna should be isolated from my home - however the noise is still there. I also compared some "60hz video" from youtube. The sound is quite different (the 60hz audio seems to be much lower, and when playing the video I can still hear those background noise so it doesn't look like they are in the same frequency range.
So, in summary:
- noise from speakers all over the house.
- antenna disconnected and still the same problem.
- noise does not sounds like the "60hz" video from youtube.
I am wondering if the problem always exists just that I don't notice, or it is really related to the antenna?
This is a recording from my computer speaker. This is a AMR file which can be opened from VLC.
http://rapidgator.net/file/23259459/VN_00003.amr.html
I disconnected the OTA antenna from the distribution splitter in the basement. So right now the antenna should be isolated from my home - however the noise is still there. I also compared some "60hz video" from youtube. The sound is quite different (the 60hz audio seems to be much lower, and when playing the video I can still hear those background noise so it doesn't look like they are in the same frequency range.
So, in summary:
- noise from speakers all over the house.
- antenna disconnected and still the same problem.
- noise does not sounds like the "60hz" video from youtube.
I am wondering if the problem always exists just that I don't notice, or it is really related to the antenna?
This is a recording from my computer speaker. This is a AMR file which can be opened from VLC.
http://rapidgator.net/file/23259459/VN_00003.amr.html