Quote:
Originally Posted by Colly0410
Up till 1964 there was no UHF TV in England, you had BBC on Low band & ITV & a (very) few BBC TX's on high band, all using 405 lines with positive video modulation & AM sound. In 1964 BBC2 (the original BBC was then called "BBC1") fired up on UHF on a different system using 625 lines, negative video modulation & FM sound, so a simple UHF to VHF converter wouldn't work. if you wanted to watch BBC2 you needed a new dual standard TV & a UHF antenna, most people didn't bother with BBC2....
Fast forward to November 1969 when BBC1 & ITV fired up on UHF 625 lines joining BBC2 with colour. (BBC2 had been in colour since 1967) About 60%/70% of the population could now get all 3 channels on 615 lines UHF from the get go & people started to buy/rent 625 lines UHF black & white or colour TV's; (You could then get old 405 lines VHF only TV's free or for very few pounds) Over the next 2/3 years dozens of 625 lines UHF TX's fired up around the country & almost everyone could now get 625 lines UHF if they wanted & by the mid 1970's England had become a de facto all UHF country, very few people now watched 405 lines VHF TV. The 405 lines VHF TX's were kept going till the early/mid 1980's but very few people actually watched them & no one seemed to notice as the last ones were turned off in Jan 1985...
Nowadays all the Digital TV TX's are on UHF & you get dozens of channels, some of them in HD...
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Not too long ago, the US had a few DTV channels on the high band VHF. Through this year, all the VHF DTV channels were eliminated. Just recently, all the DTV channels were reassigned to different locations on the mid-UHF band.
I really like the quality of the DTV reception, it's either perfect or nothing at all.
