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#31
07-01-2009, 06:56 PM
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DuMont's demonstration of the color wheel needed to convert a 30" B&W set to receive CBS field sequential color was strictly a shot at CBS and how impractical the GIANT size wheel would have to be. This was, of course, not a working color wheel.
-Steve D.
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Please visit my CT-100, CTC-5, vintage color tv site: http://www.wtv-zone.com/Stevetek/ Last edited by Steve D.; 07-02-2009 at 12:07 AM. 
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#32
07-01-2009, 09:45 PM
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Beautiful, Steve.
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#33
07-02-2009, 06:09 AM
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CBS and the rotating wheel
the Dumont demonstration was a stunt ...and CBS did have the drum set which was 17" set and looks pretty cool ...
http://www.earlytelevision.org/image...umReceiver.jpg and which would be fun to recreate! but the col-r-tel adaptor is amazing .... must have been even more astounding in the 1950s
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____________________________ ........RGBRGBRGB ...colour my world Last edited by ceebee23; 07-02-2009 at 06:15 AM.
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#34
07-05-2009, 11:24 PM
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Great set!!
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1977 Zenith Chromacolor II A Very Modern Zenith Last edited by vintagecollect; 07-05-2009 at 11:47 PM.
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#35
07-06-2009, 04:25 PM
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Hey Steve,
Here's a couple of pictures of my Color-Tel. It's permanently attached to an Admiral console. Chuck
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www.myvintagetv.com Learn from the mistakes of others - You can't live long enough to make them all yourself.
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#36
07-20-2009, 01:35 AM
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[QUOTE=ceebee23;2850736]the Dumont demonstration was a stunt..."
Well possibly, but Dumont setup a real demonstration of CBS Color in a Philadelphia courtroom with a DuMont Royal Soverign 30 inch set and a 6 foot color wheel. They were there to protest against CBS color in favor of RCA's color system. It's an interesting story. It is written up in either 'Radio and TV news' or 'Radio electronics' in the editorial section in either 1950 or 51. I'll try to find it and post it. Meanwhile... Steve, your Col-R-Tel Philco looks really great! Mine is on the same set but I can't get pictures with good grayscale like your's for some reason. What's your secret? Don't know where I've been but I missed this whole thread and want to comment on some of the posts. Attached is an early picture of my Col-R-Tel while I was restoring it after 46 years.
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#38
07-20-2009, 01:56 AM
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Quote:
Now I do. I had posted this image several years ago in another thread. This is a different version of the Philco-Col-R-Tel during restoration in 2005.
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#39
07-20-2009, 11:41 AM
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I had a great visit with Steve K yesterday... My first experience seeing a live, working Col-R-Tel! It blew me away with the performance. I had imagined a flickering, dim, blurry image, but I have to say it's better color than a tube, and the flicker is not nearly as bad as I thought. And doggone STABLE too! I'm shocked that you don't have to sit there with your hands on the controls. I further suggest that this particular restoration's performance is attributed to the one who did the restoration! Thanks Steve, for the demonstration! A couple years ago on a road trip Back East, I've also seen a CBS (Oops, I forgot: I'm sworn to secrecy).
Charles
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Collecting & restoring TVs in Los Angeles since age 10
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#40
07-24-2009, 10:47 PM
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Quote:
It's possible to build one using I.C.s and circuitry that's appeared in electronics magazines over the last 20 years.
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#41
07-25-2009, 07:12 AM
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Where has that guy been? "Modern day" color wheels are alive and well and going strong. Just go to the ETF museum when they have their yearly get together and see many examples. They also look great and I saw one that you can NOT tell that it wasn't a color CRT!!
Pioneer uses the same technology with their DLP big screen systems usilng an LCD instead of a color wheel and it also lokks fantastic!
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julian
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