Videokarma.org

Go Back   Videokarma.org TV - Video - Vintage Television & Radio Forums > Early Color Television

We appreciate your help

in keeping this site going.
Reply
 
Thread Tools Display Modes
  #1  
Old 01-01-2013, 03:41 PM
Tom S's Avatar
Tom S Tom S is offline
VideoKarma Member
 
Join Date: Sep 2008
Location: Plover, WI
Posts: 185
Rose Parade CTC 10

Here are a few shots on my CTC 10 of the Rose Parade
Attached Images
File Type: jpg SN852029.jpg (50.8 KB, 71 views)
File Type: jpg SN852025.jpg (74.1 KB, 98 views)
File Type: jpg SN852033.jpg (88.4 KB, 119 views)
File Type: jpg SN852040.jpg (71.2 KB, 119 views)
File Type: jpg SN852026.jpg (72.8 KB, 118 views)
__________________
Tom Smrz
Reply With Quote
  #2  
Old 01-01-2013, 03:58 PM
IsthmusTV's Avatar
IsthmusTV IsthmusTV is offline
VideoKarma Member
 
Join Date: Nov 2010
Location: Madison, WI
Posts: 329
Great shots, Tom. I think the reds on your CTC-10 are even better than the reds on my CTC-7.

Go Badgers!

-Clark
Reply With Quote
  #3  
Old 01-01-2013, 05:20 PM
Tom S's Avatar
Tom S Tom S is offline
VideoKarma Member
 
Join Date: Sep 2008
Location: Plover, WI
Posts: 185
Ctc 7

Don't see how, CRT's are the same. 21CYP22's . Great looking set tho. RCA's rule in the world of first color.
__________________
Tom Smrz

Last edited by Tom S; 01-01-2013 at 05:32 PM.
Reply With Quote
  #4  
Old 01-01-2013, 06:28 PM
Kevin Kuehn's Avatar
Kevin Kuehn Kevin Kuehn is offline
Workin' Late Again
 
Join Date: Jan 2011
Location: WI
Posts: 3,824
Those looking mighty fine.
Reply With Quote
  #5  
Old 01-02-2013, 09:25 PM
Dude111 Dude111 is offline
Analogue is Awesome
 
Join Date: Oct 2009
Posts: 2,406
Quote:
Originally Posted by Tom S
Don't see how, CRT's are the same.
Yup they all should be anyway!!!! -- If you turn your colour settings higher it might produce what looks like better colours though
Reply With Quote
Audiokarma
  #6  
Old 01-03-2013, 01:14 PM
Pete Deksnis's Avatar
Pete Deksnis Pete Deksnis is offline
15GP22 demo @ ETF 2007
 
Join Date: Jan 2005
Location: Big Rapids, MI
Posts: 761
Quote:
Originally Posted by Tom S View Post
Don't see how, CRT's are the same. 21CYP22's . Great looking set tho. RCA's rule in the world of first color.
A ctc7 uses the 21CYP22. The ctc10 had changed to a 21CYP22A.

Pete
Reply With Quote
  #7  
Old 01-03-2013, 04:35 PM
stromberg6's Avatar
stromberg6 stromberg6 is offline
VideoKarma Member
 
Join Date: Sep 2004
Location: Ellington,CT
Posts: 465
Not sure of the actual difference in the two tubes. Perhaps they changed the phosphor chemistry to increase brightness? I believe that my two good 21CY's are "A" types, but the poor one in my 7, a re-built with screen blemishes, i.e. dead dots, and poor focus, is an original type. Lousy pic, but amazing greens.
__________________
stromberg6
Reply With Quote
  #8  
Old 01-03-2013, 10:09 PM
Tom S's Avatar
Tom S Tom S is offline
VideoKarma Member
 
Join Date: Sep 2008
Location: Plover, WI
Posts: 185
Hey Pete, when we going to see Pics of your CT 100?
__________________
Tom Smrz
Reply With Quote
  #9  
Old 01-03-2013, 11:18 PM
old_tv_nut's Avatar
old_tv_nut old_tv_nut is offline
See yourself on Color TV!
 
Join Date: Jul 2004
Location: Rancho Sahuarita
Posts: 7,184
Quote:
Originally Posted by stromberg6 View Post
Not sure of the actual difference in the two tubes. Perhaps they changed the phosphor chemistry to increase brightness? I believe that my two good 21CY's are "A" types, but the poor one in my 7, a re-built with screen blemishes, i.e. dead dots, and poor focus, is an original type. Lousy pic, but amazing greens.
Are the screen colors different with the sets off?
Reply With Quote
  #10  
Old 01-05-2013, 02:46 PM
Pete Deksnis's Avatar
Pete Deksnis Pete Deksnis is offline
15GP22 demo @ ETF 2007
 
Join Date: Jan 2005
Location: Big Rapids, MI
Posts: 761
Quote:
Originally Posted by Tom S View Post
Hey Pete, when we going to see Pics of your CT 100?
Hi Tom,

A couple months ago the IF started tilting its bandpass shape; a light thump with the foot in front of the set straightened out things for a while, but it got worse and never passes the signal properly via the second detector to the first video amp.

But applying composite video to the composite interface adapter (I had built and added to the set) produced the usual excellent picture.

Then a few weeks ago soft horizontal bars at the line rate started rolling through the picture (but not when using an RF input!?). It looks fine though if you don't watch from 'engineers' distance.

Finally yesterday the picture turned, well, rubbery. Got mad at that and checked stuff till I found a bad/weak 12AT7. It's the sync-amp half I think was causing the problem; the other half is in the vert sync sep ckt.

So, to finally answer your question: I have been watching early Laugh-In shows that Steve Dichter had confirmed some years ago were shot with TK-41's. I found and made screen shots of the 3rd Laugh-In show because a couple of times it shows a TK-41. But, not only the camera can be seen: what it shot is also shown. Never saw that before. Am going to start a new thread w/the CT-100 screen shots.

Pete

Last edited by Pete Deksnis; 01-05-2013 at 02:51 PM.
Reply With Quote
Audiokarma
  #11  
Old 01-05-2013, 03:43 PM
Phil Nelson's Avatar
Phil Nelson Phil Nelson is offline
VideoKarma Member
 
Join Date: Jan 2006
Posts: 4,030
Quote:
Originally Posted by Pete Deksnis View Post
the composite interface adapter (I had built and added to the set)
Pete, not to stray too far off topic, but is that a video preamp as described in the 1956 RCA Broadcast News article? I made one of those about a year ago and wasn't crazy about the result (probably due to my lack of skill as a scratch builder).

http://www.antiqueradio.org/art/BROA...EWS_0656_1.jpg
http://www.antiqueradio.org/art/BROA...EWS_0656_2.jpg
http://www.antiqueradio.org/art/BROA...EWS_0656_3.jpg
http://www.antiqueradio.org/art/BROA...EWS_0656_4.jpg

Regards,

Phil Nelson
Reply With Quote
  #12  
Old 01-06-2013, 03:22 PM
Pete Deksnis's Avatar
Pete Deksnis Pete Deksnis is offline
15GP22 demo @ ETF 2007
 
Join Date: Jan 2005
Location: Big Rapids, MI
Posts: 761
Quote:
Originally Posted by Phil Nelson View Post
Pete, not to stray too far off topic, but is that a video preamp as described in the 1956 RCA Broadcast News article? I made one of those about a year ago and wasn't crazy about the result (probably due to my lack of skill as a scratch builder).

http://www.antiqueradio.org/art/BROA...EWS_0656_1.jpg
http://www.antiqueradio.org/art/BROA...EWS_0656_2.jpg
http://www.antiqueradio.org/art/BROA...EWS_0656_3.jpg
http://www.antiqueradio.org/art/BROA...EWS_0656_4.jpg

Regards,

Phil Nelson
Phil,

[Slow response to posts cause: Thursday the Internet crapped out in the senior bldg where I live, so am once a day trudging thru the snow to my kids' house for an on-line stint. They incidentally are in FL for a week treating my grandsons to Disney World. Yes, wish I were there too.]

There's a PDF that formed the basis of my part of a 2011 EFT convention presentation on composite interface adapters. It documents some changes to the basic 1956 RCA circuit using the 12AT7. I'll get it too you somehow; I tried but this site won't let me upload it though it's only 2.66 meg.

Pete
Reply With Quote
  #13  
Old 01-06-2013, 07:18 PM
Phil Nelson's Avatar
Phil Nelson Phil Nelson is offline
VideoKarma Member
 
Join Date: Jan 2006
Posts: 4,030
Pete, I sent you a PM with my email address. If you send me the PDF, I can host the info on my website and post the link here.

I'll add a link to that from my CT-100 article as well. I recently moved my CT-100 to a place where I can watch it more often and I'd like to see what its picture looks like with a direct video input.

Thanks!

Phil Nelson
Reply With Quote
  #14  
Old 01-07-2013, 04:05 PM
Pete Deksnis's Avatar
Pete Deksnis Pete Deksnis is offline
15GP22 demo @ ETF 2007
 
Join Date: Jan 2005
Location: Big Rapids, MI
Posts: 761
Quote:
Originally Posted by Phil Nelson View Post
Pete, I sent you a PM with my email address. If you send me the PDF, I can host the info on my website and post the link here.

I'll add a link to that from my CT-100 article as well. I recently moved my CT-100 to a place where I can watch it more often and I'd like to see what its picture looks like with a direct video input.

Thanks!

Phil Nelson
Phil: I'll get the pdf to you at my daily web-time tomorrow at about this time. There's another file I may send also that documents my production of the units made back in the middle of 2009; it never was linked to the outside world.

BTW: Those "...soft horizontal bars at the line rate started rolling through the picture...." mentioned yesterday are gone. Don't think I'd believe this if it didn't happen to me, but yesterday I finally broke out the humidifier and after six or so hours when when the set was powered up, the bars were gone. Go figure!

Pete
Reply With Quote
  #15  
Old 01-10-2013, 09:55 PM
Phil Nelson's Avatar
Phil Nelson Phil Nelson is offline
VideoKarma Member
 
Join Date: Jan 2006
Posts: 4,030
Bingo! Pete, I modified my video preamp per your instructions and it works very well. I have never seen such a crisp, rich picture on my CT-100. Alas, we are plagued with house guests for another couple of days, so no more on that topic for now.

Back to the original topic -- Tom, that CTC-10 looks like you have really dialed it in. As a CTC-7 and CTC-11 owner, the first thing I look at in screen shots is convergence issues at the far edges. I wish I could get either of those sets to look as clean as your CTC-10 does in those photos.

Phil Nelson
Reply With Quote
Audiokarma
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 02:32 PM.



Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
©Copyright 2012 VideoKarma.org, All rights reserved.