15-07-2023, 10:45 AM
(This post was last modified: 15-07-2023, 10:52 AM by Mike Watterson.)
About 8 to 12 years. The paper dielectric caps are the limiting factor in most 1930s radios, because unless hermetically sealed the paper and the oil/paraffin/wax impregnation absorbs water. Yes, resistors and valves age, and sometimes electrolytics dry out, but the leakage current from anode to grid is catastropic and if there are valves with screen grids the g2 volts controls gain and so you dramatically lose gain too, even if the voltages on g1 hasn't cooked everything.
Of course the CRTs got dim. About 1959 to 1961 we had my grandparent's old TV and you had to pull heavy curtains and put light out to watch at all. I'm thinking it was reruns of the Woodentops and Andy Pandy I saw. Though it must have been 1st showing of Supercar (UTV).
There was more test card than programs back then? We moved in late 1961 and then had dual standard rental TV. We had it till late 1969 when we moved again (after the men landing on the Moon and the NI Troubles started as I remember the pirate stations from no-go areas and my R1155) and got a rental Colour TV. Even in 1980 my grandparents still had a B&W hybrid dual standard set .
I think by late 1970s people just bought Colour TVs, the Thorn TX9 and TX10 common as was Philips in N.I. Rental was virtually gone.
Edit: Of course there was also Bill and Ben, There was some other puppet series where animals lived in a big log, but that was earlier, or not repeated and I've never figured what it was called. I only remember the flaps and heads popping out in intro.
Of course the CRTs got dim. About 1959 to 1961 we had my grandparent's old TV and you had to pull heavy curtains and put light out to watch at all. I'm thinking it was reruns of the Woodentops and Andy Pandy I saw. Though it must have been 1st showing of Supercar (UTV).
There was more test card than programs back then? We moved in late 1961 and then had dual standard rental TV. We had it till late 1969 when we moved again (after the men landing on the Moon and the NI Troubles started as I remember the pirate stations from no-go areas and my R1155) and got a rental Colour TV. Even in 1980 my grandparents still had a B&W hybrid dual standard set .
I think by late 1970s people just bought Colour TVs, the Thorn TX9 and TX10 common as was Philips in N.I. Rental was virtually gone.
Edit: Of course there was also Bill and Ben, There was some other puppet series where animals lived in a big log, but that was earlier, or not repeated and I've never figured what it was called. I only remember the flaps and heads popping out in intro.
