Did Channel 4 ever switch off the transmitter after closedown, like BBC did? Or did they just show this 'test card' thing until the first morning programme?
@Tomsonic41 technically Channel 4 never did - the IBA owned the commercial TV transmitters until privatisation in 1990. From then on it was NTL, Arqiva or Crown Castle.
I would suspect they did switch them off, just as the BBC sometimes did all nighters after closedown.
@AidanLunn The only time when this happened (the leaving transmitters on all night) was if the weather was bad and this meant the transmission equipment was vulnerable to freezing up.
@cwilliams1976 I doubt a bleeding massive Klystron valve was likely to freeze up, even when switched off for just a few hours!
And you don't keep a transmitter aerial on all night to disperse ice and snow, just the heating elements around it, which most if not all transmitters had by 1995.
Did Channel 4 ever switch off the transmitter after closedown, like BBC did? Or did they just show this 'test card' thing until the first morning programme?
Tomsonic41 9 months ago
@Tomsonic41 technically Channel 4 never did - the IBA owned the commercial TV transmitters until privatisation in 1990. From then on it was NTL, Arqiva or Crown Castle.
I would suspect they did switch them off, just as the BBC sometimes did all nighters after closedown.
AidanLunn 9 months ago
@AidanLunn The only time when this happened (the leaving transmitters on all night) was if the weather was bad and this meant the transmission equipment was vulnerable to freezing up.
cwilliams1976 6 months ago
@cwilliams1976 I doubt a bleeding massive Klystron valve was likely to freeze up, even when switched off for just a few hours!
And you don't keep a transmitter aerial on all night to disperse ice and snow, just the heating elements around it, which most if not all transmitters had by 1995.
AidanLunn 6 months ago
Announcer is Carol Bolt
Visonu 10 months ago