|
|
|
#16
11-15-2005, 12:12 AM
|
||||
|
||||
|
Umm, that's three dead links in this thread now.
__________________
tvontheporch.com 
|
|
#17
11-15-2005, 12:21 AM
|
|||
|
|||
|
OK, I don't get it but when you click this , & remove the - 2 & hit enter you get the picture ? Shows all Color TV for 1957.......Lets try one more time ? http://community-2.webtv.net/stevete.../importD10.jpg
Last edited by G.B.; 11-15-2005 at 12:31 AM.
|
|
#18
11-15-2005, 12:24 AM
|
|||
|
|||
|
T D Ryan I don't ge this. If you put this up & it says it is a dead link. But if you remove the -2 you get the picture you try it Please. Then when you post you get this & it will not open...
Last edited by G.B.; 11-15-2005 at 12:28 AM.
|
|
#19
11-15-2005, 01:05 AM
|
||||
|
||||
|
Here it is, I right clicked and saved it:
|
|
#20
11-15-2005, 01:38 AM
|
||||
|
||||
|
Quote:
-Steve D.
__________________
Please visit my CT-100, CTC-5, vintage color tv site: http://www.wtv-zone.com/Stevetek/
|
| Audiokarma |
|
#21
11-15-2005, 11:06 AM
|
|||
|
|||
|
Thanks Chad for your help & SteveD. for the history. May be the server of the forum or something. chad did you get my email ? Sent you personal on forum & to your Retro Audio Lab....
Last edited by G.B.; 11-15-2005 at 11:09 AM.
|
|
#22
11-15-2005, 12:41 PM
|
||||
|
||||
|
I have the book shown, but thats not the one I was referring to. I saw it in a bookstore somewhere, it was published in the last decade, I think. Had pages of sets-some may have been of the CBS color-wheel variety. All were small screen from c.1954. I seem to recall sets from companies like Andrea, Stromberg-Carlson, etc. These appeared to be new photos, taken of sets in somebodies collections. I only saw that book once; it was too expensive for me to buy it at that time.
__________________
Bryan
|
|
#23
11-15-2005, 04:11 PM
|
|||
|
|||
|
Several factors slowed rectangular color tubes.
1. Availability of blanks from Corning 2. Consistency in corner convergence 3. Shutting down round tube production to make way for rectangular tube capacity 4. Availability of thin CRT guns 5. Availability of yokes, flybacks and other components, in production quantity, to support the new format 6. Reluctance of other manufacturers to commit too soon 7. Heat problems in the thin neck. That's one reason most rectangulat tubes run on lower heater current. 8. Getting the service industry up to speed 9. Why push it prematurely if round tube color sets were selling well? Wait until it's ready. The manufacturers did not want to repeat the first generation mistakes that were still fresh in the serviceman's and customer's minds. 10. Don't forget that most round tube sets looked pretty good 35-45 years ago. They were relatively new, had good bright CRTs and nice pictures. Greed was not the prime factor. It was what the public would accept. Don
|
|
#24
11-15-2005, 08:42 PM
|
||||
|
||||
|
Why no porthole color
Cutting off the top and bottom probably made convergence easier, but I think it was mainly that porthole designs were long dead, and black and white sets had already gone from cut-off to rectangular - so going to flat top and bottom was only one stylistic step backwards. The RCA 15 inch tube had an internal bezel defining this shape. Thsi disappeared when tube construction was simplified for the 21-inch, but the external bezel was cutoff the same way.
|
|
#26
11-15-2005, 11:23 PM
|
|||
|
|||
|
What is the difference in total square inches of viewable screen area between a masked 21 inch round and 23 inch or 25 inch rectangular anyway? Since 25 was the biggest size for a looooong time maybe there wasn't that big of an advantage for rectangulars screen-size wise over roundies anyway - mainly it just got rid of the 'round' part.
|
|
#28
11-16-2005, 12:28 AM
|
||||
|
||||
|
A round color tube is a "19V" tube, it has a 19 inch diagonal viewable area. (some of the very late model round tubes are labeled with a 19V" designation)
This is theoretically the same viewable area as on say a 19" Zenith solid state Chromacolor set using a 19V" rectangular tube.
|
|
#29
11-16-2005, 12:56 AM
|
||||
|
||||
|
The image displayed is closer to a that of a 25" set though due to the carved-off corners.
__________________
tvontheporch.com
|
|
#30
11-16-2005, 01:20 AM
|
|||
|
|||
|
Ah yes found it:
21 inch rect = 212 sq inches viewable 23 inch rect = appx 250 25 inch = 300 21 inch roundie = 254 So looks like a 21 roundie is equvalent to about a 23 inch rectangular in viewing area, not bad.
|
| Audiokarma |
 |
|
|
Linear Mode
