RJ
As said 405 lines had very few viewers by 1985. 405 line only sets were not made or sold after the mid 60s, so the chance of a 20 year TV still working by 1985 was slim (but there were of course some)
The UHF network of transmitters continued to be expanded into the early 90s.
It slowed in the early 90s, but didn't stop. The final UHF (analogue) relay to open was Portbury, near Bristol in summer 1998, two months before DTT roll out started.
Presumably if you were in one of the few VHF 405-only areas which didn't have UHF coverage (at least of BBC One/ITV) you had a strong incentive to keep your VHF 405-compatible set (which may also have been 625-compatible) running though.
Indeed. Dual standard sets, with both VHF and UHF tuners, were available from the early sixties to around the mid 70s. There were even dual standard colour sets which allowed viewers to watch the VHF channels (in black and white) as well as BBC 2 colour programmes. Interestingly the Scottish Borders had a strange anomaly....Border TV was available in colour from Selkirk from March 1972. It wasn't until May 1973 that BBC 1 and BBC 2 colour transmissions began.
As said 405 lines had very few viewers by 1985. 405 line only sets were not made or sold after the mid 60s, so the chance of a 20 year TV still working by 1985 was slim (but there were of course some)
The UHF network of transmitters continued to be expanded into the early 90s.
It slowed in the early 90s, but didn't stop. The final UHF (analogue) relay to open was Portbury, near Bristol in summer 1998, two months before DTT roll out started.
Presumably if you were in one of the few VHF 405-only areas which didn't have UHF coverage (at least of BBC One/ITV) you had a strong incentive to keep your VHF 405-compatible set (which may also have been 625-compatible) running though.
Indeed. Dual standard sets, with both VHF and UHF tuners, were available from the early sixties to around the mid 70s. There were even dual standard colour sets which allowed viewers to watch the VHF channels (in black and white) as well as BBC 2 colour programmes. Interestingly the Scottish Borders had a strange anomaly....Border TV was available in colour from Selkirk from March 1972. It wasn't until May 1973 that BBC 1 and BBC 2 colour transmissions began.