Original sentence: Engineering Announcements For The Radio And Television Trade, sometimes abbreviated to Engineering Announcements, was a weekly magazine of news and information intended for technicians and salespeople, produced and transmitted by the Independent Television Authority (and later the Independent Broadcasting Authority) from 23 November 1970 until 31 July 1990.Engineering Announcements broadcast for the final time on 31 July, 1990 with a retrospective programme.Engineering Announcements, and the BBC's similar Service Information, are examples of regularly scheduled ghost programmes, so called because they were never advertised in on-air schedules, in newspaper TV listings, the TV Times or on teletext.IBA Information.The launch of TV-am meant that the ITV network would no longer be available to show Engineering Announcements at the old time, however Channel 4, still in its infacy, generally didn't start broadcasting until the early evenings
Edited sentence: Engineering Announcements broadcast for the final time on 31 July 1990 with a retrospective programme.Engineering Announcements for the Radio and Television Trade, sometimes abbreviated to Engineering Announcements, was a weekly magazine of news and information intended for technicians and salespeople, produced and transmitted by the Independent Television Authority (and later the Independent Broadcasting Authority) from 23 November 1970 until 31 July 1990.Engineering Announcements, and the BBC's similar Service Information, are examples of regularly scheduled "ghost programmes," so called because they were never advertised in on-air schedules, in newspaper TV listings, the TV Times or on teletext.The launch of TV-am meant that the ITV network would no longer be available to show Engineering Announcements at the old time, however Channel 4, still in its infancy, generally didn't start broadcasting until the early evenings