Couple of observations:
Looks like Tas TV had adopted a similar look to Seven National News in Melbourne at the time.
So was it Tom Payne reading from Hobart and Tim Lester from Launceston? Northern viewers would not have liked seeing their news coming from Hobart I imagine. From what I recall there was something of a north/south rivalry in those days.
Despite Tas TV having a news affiliation with Seven it looks like they were running news stories from Nine, with one story by Peter Harvey and one voiced by Brian Naylor