#91
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Best room lighting is nothing shining on the face, and a "TV lamp" dimly illuminating the wall behind the set. The CRT is too reflective and the picture too dim to compete with general room lighting.
just googled this, (no recommendation intended): http://www.tvlamps.net/ |
#92
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I have also done this since I got my first color TV in 1979. My method was always to start with the contrast at minimum (and brightness set for proper black level), then increase the contrast to the least amount I thought I could live with. Usually this was less than halfway up.
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Chris Quote from another forum: "(Antique TV collecting) always seemed to me to be a fringe hobby that only weirdos did." |
#93
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Quote:
Quote:
Some have said that RCA realized their mistake in the HV department, since all the later chassis had stiffer HV sections by comparison and were all more capable of producing high brightness than the CTC-5 chassis was. The CTC-5 has a stated HV of 19.5kv, CTC-7 comes in at 22.5kv (23.5 for the ones with silicon in the LV power supply), CTC-9 is 22.5kv, and later chassis went back to the full 25kv of the early models (CTC-16 thru CTC-20). So it seems on the surface that they made an error in judgement, but there may be a reason for their decision. We know that the CTC-5 had 2 distinct lines, both low cost entry level sets and the TOTL stuff. Since chassis tend to share parts on a generational basis, it's entirely possible that the 5 and 5N chassis only had the same HV sections because it was the most cost effective thing to do (parts bin swapping, as it's known). Then again, one could argue that when you make a TOTL set, you put top quality circuits in it. To counter that argument, perhaps they spent all their money with the 5N on it's more complicated chroma circuits and fancy cabinets. Seems an interesting discussion to have.
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Evolution... |
#94
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I have always wondered why RCA went from the 25KV of the 21CT55 to the 19.5KV of the CTC-5. When did the big TV radiation controversy come about? Could it have been a reaction to the radiation concerns? Or was this before the radiation concerns arose?
It is a shave the CTC-5s don't perform better, that Wingate is one beautiful set! Wish I had one. :-)
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John Folsom |
#95
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I remember X-ray warnings in the mid to late 1960's. I've got several 6BK4's and 3A3's with the leaded glass.
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Audiokarma |
#96
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I believe I've seen X-RAY warnings on original 1B3 tubes from the 50s, especially Philco branded by Sylvania. Don't know when the controversy began with CRT's. My CTC-4 generates about .4 millirems/Hr measured with the Geiger tube directly up to the safety glass, with a pure white screen.
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stromberg6 |
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