[Audioarchivist]

I re-checked my stripe-y example, my vinyl transfer of a King Biscuit Flower Hour lp of ZZ Top.
The stripe is there sometimes and is gone other times...
There's commercials on the record, and the stripe dissappears during those breaks, and re-appears for some songs, but by the end of the show it's gone for good. I can conclude that it wasn't added on my equipment, but is embedded in DIR broadcasting's master tape.
It's in the show for side 1 and 2 but gone for side 3, and it's not in the commercials.
The first two caps are from side 1 and 2, the third is nearer the end of the show.
As I looked through the whole show, like I say, it goes away when the music fades and a commercial on the vinyl plays, so it can't be interference from my monitor or tv(which wasn't on during turntable operation, anyway)...