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#1
01-05-2009, 09:25 PM
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SKF NTSC medical color TV 1957
postcard sent to MDs
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#2
01-06-2009, 09:47 AM
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Good to know there was something on TV to gross me out long before Discovery Channel came along.
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From Captain Video, 1/4/2007 "It seems that Italian people are very prone to preserve antique stuff."
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#3
01-06-2009, 05:37 PM
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Thanks Wayne. I had not seen that postcard anywhere before. I keep hoping one of those SKF systems will be found somewhere one of these days.
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John Folsom
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#4
01-07-2009, 07:14 PM
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SKF used the old CBS Scanning Disc color system in that era. Ed Reitan had some data on that on his site. These colorcasts were actually closed circuit for medical personnel only.
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#5
01-07-2009, 07:51 PM
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#6
01-07-2009, 07:57 PM
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Yeah, seems like I remember reading that one of the ways they were trying to "sell" color TV back then was the medical/instructional/industrial angle.
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Benevolent Despot
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#7
01-07-2009, 09:46 PM
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If you like that, you will really enjoy these pictures of medical television. Someone had posted these URL's of TK41's and CTC5's. Also some other custom RCA color microscope cameras. (TK45's) I have no idea what the guy with the tux is doing to the man in the chair with what looks like a bong!! Also there is a patient on a stretcher that looks like he is gagged. What kind of doctors are they anyhow??
Great pictures of the cameras and you can enlarge them to see more detail! Notice in one picture all three cameras have the top front acess doors open because of the heat problems these TK41B's had. There is a gang of HO type tubes under there and this is before RCA was installing a fan on that door. http://images.google.com/hosted/life...d20114dce490b4
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julian
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#10
01-09-2009, 12:12 PM
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Hi,
Interesting use for early color TV. Thanks for clearing up that NTSC Color was in use by then. That RCA Microscope Color camera is very interesting. Would be neat if Julian could find one of those trucks intact.
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#11
01-09-2009, 08:09 PM
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Here's the section on the microscope and surgical camera from RCA's "Color Television Manual for Technical Training" (2nd ed., 1959)
More about the TK-45 can be found at http://www.oldradio.com/archives/hardware/TV/RCA-TV.htm The sensitivity of this camera was pretty terrible. Suitable for operating theaters, perhaps, I think the microscope version would have overheated any live specimens, but may have been OK for stained slides. I remember the one at the Museum of Science and Industry in Chicago was brightly lit by a long row of PAR bulbs behind the valence. The lighting was at a high angle, which made people's eye sockets look like two black holes. Even with the high angle, it was nearly impossible to look out and actually see yourself on the monitor. Also, the background mural would show through anyone who didn't stop for a few seconds, due to the high lag of the vidicons.
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#13
01-09-2009, 10:06 PM
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Quote:
See the Tk-26 here: http://www.oldradio.com/archives/har.../RCA-TV.htm#q2 edit: "TK-25" typo fixed to "TK-26"
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#14
01-10-2009, 03:56 PM
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Quote:
David
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#15
01-09-2009, 09:28 PM
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I doubt that any of the TK45's still exist. Most likely less than 10 systems were built (if that many) as they had to be horribly expensive for what they were and the amount of equipment involved. Only a handfull of gov't organizations could actually fund those projects esp when color TV was still new and pretty much a science fair project for that moment. I know of none anywhere, anyone else know of one or pieces of one?
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julian
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