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Well I have a bit of egg to wipe off of my face... My grandparents called me, irate that their TV set was on the fritz again. I went over to look at the situation and discovered that only channel 28 WCMZ was coming in. I dragged along a small table top flatscreen, hooked it directly up to the antenna, and discovered that all of the Detroit stations, all of the Flint/MBS stations, and all but one of the Lansing stations were coming in fine.
To make a long story short, I had a newer section of quad shield RG-6 (that I had replaced when changing the antenna out) that had more than likely been bad from day one and was only getting progressively worse. The moral of the story? Don't trust that anything has been manufactured correctly. I replaced a 25 foot section of wire inside the house and now they have more stations than they had in the analog era. They still can't get WILX, which they could get before the analog shutoff, but the new stations more than make up for it. I owe Wayne and the others involved in the DTV standards development a qualified apology; VHF performance with DTV is less than ideal, but it's a hell of a lot better than I thought it was. This does bring up another point though, trouble shooting with analog was much easier than it is with the DTV standard. Anyway, I'm sorry guys. Last edited by benman94; 11-04-2017 at 06:27 PM. |
#2
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For sure. One of the inventors of digital VSB liked to say that "analog is the window on the RF world." The problem is that you don't see varying quality as you adjust an antenna or repair a RF feed - the picture is only there or not there, and you have no idea how much head room you have above the threshold. Some manufacturers have attempted tuning aids that give some sort of signal quality indication, perhaps combining both signal strength and ghost energy, but this has been only modestly successful as far as I know.
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