BBC1 | closedown | 17th August 1993

[@techtinkerin]

Mega nostalgic 😊❤️

[@GROMIT9]

The Clip comes from Tuesday 17th August 1993.

[@AprilSlocombe]

I remember that horrific PIF.

[@josesanches9167]

Clock 12:21 am.

[@hollypietrzak5214]

How come no test pattern Came up at 4:33?

[@aidanlunn7441]

The BBC didn't always put a testcard on after closedown. In fact, more often than not they didn't put one up as it wasn't needed. The testcard was for testing and setting up TV equipment, so who would be setting up a TV set at 20 minutes past midnight?

[@hollypietrzak5214]

Aidan Lunn but why is there a tone though?

[@aidanlunn7441]

holly pietrzak A) to wake viewers up if they had fallen asleep and to let them know the TV was still on. B) I think because some of the transmitters required sound to stay on. Once sound was removed they would begin a shutdown procedure after five minutes of no sound. (More recent ones for 1993 relied on line and frame sync pulses with no video information, hence the black screen, being shown for a certain number of minutes. If a transmitter was to go off showing the testcard then that would need manually activating from the transmitter's control centre).

[@hollypietrzak5214]

Aidan Lunn but why didn't it go into static though? I thought most stations did that?

[@aidanlunn7441]

Most stations do that when the transmitters shut down - the white noise (or "static" as you called it) is a result of the (analogue) tuner in the VCR or TV receiving no signal. The black raster with tone is between the channel going off air and that channels transmitters shutting down.

[@applemask]

A surprisingly impish Peter Bolgar.

[@louiehinoja3900]

its friday Night