VHS tapes have two separate audio tracks (stereo and mono). Normally when the stereo track is corroded I just switch to the mono track when digitizing. But THIS time, SOMEHOW, something completely different was recorded to the mono track. It appears to be some kind of weather radio channel....? In terms of value this tape is priceless -- I've digitized hundreds of tapes and never run across this kind of quirk before. As an archivist, though, this tape sucks -- neither track is any good, so I can't win either way. The problem appears to be from the station -- only programs recorded from ABC that day turned out like this. Have any of you ever heard of such a thing? What could have caused this?