03-07-2021, 06:18 PM
Steve in Pudsey post_id=25529 time= user_id=942 Wrote:Albeit this example is the last one on ITV, so by that point BT had probably got automated switching operational in most areas, so you can't read too much into the frame roll after TV-am's last trail.
Actually the clues are possibly contained within that programme. They stated that BT had completed the automated switching mods. So that frame roll must have been at 09:15:00, and what we see is Sutton Coldfield etc being switched by BT Brum from TV-am national station output to Central Birmingham's o/p. At the same time BT in London replace TV-am station output with IBA Crawley Court on the 'ITV' national dist, and Central fade up the IBA feed at 09:15:05. At 09:17 the programme starts, then at the end Central fade it out, and fade up the IBA slide that says ITV progs get going shortly, then Central go into their start up sequence.
Presumably from the following week, TV-am carry on to 09:25:00 hrs and BT perform their line switches at that time, and everything carries on like that until 1993.....