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Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc. |
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25th Jun 2021, 11:59 am | #1 |
Heptode
Join Date: May 2006
Location: Accrington, Lancashire, UK.
Posts: 977
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405 to 625
Hello all,
Regarding the switch to UHF, did the opening of BBC1 and IBA happen together? And what were the years, I seem to remember VHF transmissions ceased in 81, but did that cause lots of issues where UHF was hit and miss? I lived in Yorkshire, in a very bad area, and the tv pictures were no better! Massive arrays of dual UHF 18 elements, who remembers them. |
25th Jun 2021, 12:18 pm | #2 |
Dekatron
Join Date: Feb 2005
Location: West Cumbria (CA13), UK
Posts: 6,118
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Re: 405 to 625
Rather than repeating the details of dates here, perhaps it would be better to see https://405-line.tv/tv-history/, which gives a detailed time line of British television broadcasting.
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Mending is better than Ending (cf Brave New World by Aldous Huxley) |
25th Jun 2021, 12:31 pm | #3 |
Heptode
Join Date: May 2006
Location: Accrington, Lancashire, UK.
Posts: 977
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Re: 405 to 625
Thanks Dave, I'm sure it will make interesting reading.
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25th Jun 2021, 12:32 pm | #4 |
Dekatron
Join Date: Aug 2013
Location: Wigan, Greater Manchester, UK.
Posts: 9,425
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Re: 405 to 625
The area I worked and still live in had strong signals on B1,3 and 5, rarely did we need large arrays. The TV’s sets from the late 50’s through the 60’s were capable of excellent results on 405. I think the major difference in picture quality between 405 and 625 was on the bigger screens, 23 inch ones. At normal viewing distances on smaller screens it wasn’t as noticeable.
Others will have other experiences.
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Frank |
25th Jun 2021, 12:56 pm | #5 |
Heptode
Join Date: May 2006
Location: Accrington, Lancashire, UK.
Posts: 977
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Re: 405 to 625
Yes, the 23 inch 405 sets could look quite "liney". Preferred 19 inch ones, and now we want bigger sets.
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26th Jun 2021, 8:54 am | #6 |
Dekatron
Join Date: Jun 2005
Location: Warnham, West Sussex. 10 miles south of DORKING.
Posts: 9,145
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Re: 405 to 625
I remember the change over very well. At the time we had a Murphy CTV2210D dual standard 22" model. I had already reset the tuner keyplates to allow 3X 405 and 3X625 positions on the push button UHF tuner.
There were many experimental 'unofficial' broadcasts before the opening of BBC1 and ITV, 15th November 1969. One evening I was just about to go to bed when the ITA announced that 'The Frost Programme' was about to be broadcast in colour! That was sometime during early October. I remember calling up to mum who had just gone to bed and she got up and came down to watch it! Such was the incredible power and attraction to colour TV. John. |
26th Jun 2021, 8:57 am | #7 |
Heptode
Join Date: May 2006
Location: Accrington, Lancashire, UK.
Posts: 977
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Re: 405 to 625
My first colour was a G6. Couldn't drag me away, still remember it now.
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26th Jun 2021, 2:15 pm | #8 |
Dekatron
Join Date: Jun 2005
Location: Warnham, West Sussex. 10 miles south of DORKING.
Posts: 9,145
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Re: 405 to 625
Thinking about it I think the F.P. was on BBC1. BBC1 was on Ch 26, ITA on 23 and BBC2 33 in London.
The G6 was the first colour TV I repaired. It was the LOPT! Nice and easy plug in job but I had to get the soldering iron out for just two wires! Well it is a Philips. Great colour. J. |
26th Jun 2021, 2:25 pm | #9 |
Nonode
Join Date: Jun 2013
Location: Surbiton, SW London, UK.
Posts: 2,801
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Re: 405 to 625
If you were in a more remote area it might have been later. For example Caradon Hill
only offered BBC2 in 1969, our Thorn 900 had no uhf tuner. I thought it was worth waiting to Jan 1971 for a new s/s Thorn 3000 just for BBC2, BBC-1 and ITV (initially on Test Card F) started in March. I "acquired" the old 900 and fitted a uhf tuner. |
26th Jun 2021, 2:35 pm | #10 |
Heptode
Join Date: May 2006
Location: Accrington, Lancashire, UK.
Posts: 977
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Re: 405 to 625
Saw a good number of G6's. I developed a liking for them. Power guzzlers but I suppose most were, B&O 2000?
Happy days. |
26th Jun 2021, 4:46 pm | #11 |
Dekatron
Join Date: Jun 2005
Location: Warnham, West Sussex. 10 miles south of DORKING.
Posts: 9,145
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Re: 405 to 625
Yes when you got familiar with them they were fine. I serviced quite a number of the dual standard ones. For some unexplainable reason I found them more reliable than the later single standard versions with that purple desaturation choke [L5515?] burning up for no apparent reason. I rarely replaced it in the dual.
They certainly were the progression from 405 to 625 and colour and they did it quite well. As regards aerials. I remember the massive installation complete with guy wires on the roof of the Burford Bridge Hotel at Box Hill. They had four 18 element aerials in a box configuration. I would loved to have seen the picture. [Why did you have to spoil everything and mention the B&O] Regards, John. |
27th Jun 2021, 7:45 am | #12 | |
Dekatron
Join Date: Aug 2013
Location: Wigan, Greater Manchester, UK.
Posts: 9,425
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Re: 405 to 625
Quote:
https://vintage-radio.net/forum/showthread.php?t=127893
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