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
  #16  
Old 01-13-2018, 10:19 AM
dieseljeep dieseljeep is offline
VideoKarma Member
 
Join Date: Jul 2010
Posts: 7,562
Quote:
Originally Posted by Tom9589 View Post
I would be interested to hear your thoughts about GE making the Hue/Tint control a rear panel screwdriver adjust control. Is the tint stable enough that you don't need to adjust it often? Is the crystal ringing oscillator circuit that stable?
The PortaColor has the same type circuit.
The only GE that didn't use it was a IIRC the CA model, RCA semi-clone. If that the one I'm thinking about, the original GE service manual shows the color board as RCA design, including their artwork.
The 1957 GE color set, IIRC 21CL500 with the "L" shaped chassis and three 5U4's had a compression trimmer tint control as part of the front operating controls. That one also used the Victoreen HV regulator.
Reply With Quote
  #17  
Old 01-13-2018, 10:34 AM
dieseljeep dieseljeep is offline
VideoKarma Member
 
Join Date: Jul 2010
Posts: 7,562
Quote:
Originally Posted by WISCOJIM View Post
Yes, that's his. I saw it Sunday when I picked up some other items from him. There will be logistical problems on his end as well. Damn stairs!

.
That was fun getting the CTC5 out, I bought from him.
I saw the GE then. That cabinet seems very large compared to the other 15" models.
Ask Bob G. if he remembers getting John Folsom's Admiral out of that upper flat in Sheboygan. That was fun too!
Reply With Quote
  #18  
Old 01-13-2018, 11:36 AM
zeno's Avatar
zeno zeno is offline
VideoKarma Member
 
Join Date: Mar 2013
Location: New Hampshire
Posts: 4,672
GE wasnt done with tint control hijinks. Most of there sets
the tint works the opposite of all other sets. They also reversed
the brite & contrast functions on a few. The PC II & that dog
16" set IIRC.
And to rub it in my GE range has the UP arrow on the left & the DOWN
arrow on the right. Go figure........

73 Zeno
LFOD !
Reply With Quote
  #19  
Old 01-13-2018, 11:55 AM
ohohyodafarted's Avatar
ohohyodafarted ohohyodafarted is offline
Bob Galanter
 
Join Date: Sep 2005
Location: Whitefish Bay, Wi (Milwaukee)
Posts: 1,053
Quote:
Originally Posted by dieseljeep View Post
That was fun getting the CTC5 out, I bought from him.
I saw the GE then. That cabinet seems very large compared to the other 15" models.
Ask Bob G. if he remembers getting John Folsom's Admiral out of that upper flat in Sheboygan. That was fun too!
Yes I remember removing that Admiral 15" set. It was in a 2nd floor room of a hoarder's house. The winding stairwell path to the 2nd floor was only wide enough to walk one foot in front of the other. First floor of the house was so packed that the owner had to crawl over a pile of stuff in the doorway to the bedroom to get to the bed. It took us several of hours to clear the 2nd floor hallway and the winding stairwell to the 1st floor. But well worth the effort because the set had a good 15G and it is an ultra rare set. The Admiral has a very unique cabinet design in which the front swings up and rearward to access the chassis for service and adjustments. VERY COOL!! Admiral did a great job designing that set. Wish I had one.

Here's a photo of the ADmiral sitting in my van after we exhumed it from the hoard house.
Attached Images
File Type: jpg IMG_5731.jpg (71.4 KB, 119 views)
__________________
Vacuum tubes are used in Wisconsin to help heat your house.

New Web Site under developement
ME http://AntiqueTvGuy.com
Reply With Quote
  #20  
Old 01-13-2018, 01:50 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 Tom9589 View Post
I would be interested to hear your thoughts about GE making the Hue/Tint control a rear panel screwdriver adjust control. Is the tint stable enough that you don't need to adjust it often? Is the crystal ringing oscillator circuit that stable?
This has been discussed elsewhere on VK, but the summary is that either PLL or ringing circuits can be designed to do an equivalent job. The GE circuits do not show any noticeable deficit in performance.

The practical reasons why the hue control should have been on the front are variations in burst phase from the broadcaster and the fact that people with normal color discrimination can have a difference in sensitivity to the red and green NTSC primaries (up to +/- 20% worst case according to an early RCA paper).
__________________
www.bretl.com
Old TV literature, New York World's Fair, and other miscellany
Reply With Quote
Audiokarma
  #21  
Old 01-13-2018, 08:23 PM
dieseljeep dieseljeep is offline
VideoKarma Member
 
Join Date: Jul 2010
Posts: 7,562
Quote:
Originally Posted by ohohyodafarted View Post
Yes I remember removing that Admiral 15" set. It was in a 2nd floor room of a hoarder's house. The winding stairwell path to the 2nd floor was only wide enough to walk one foot in front of the other. First floor of the house was so packed that the owner had to crawl over a pile of stuff in the doorway to the bedroom to get to the bed. It took us several of hours to clear the 2nd floor hallway and the winding stairwell to the 1st floor. But well worth the effort because the set had a good 15G and it is an ultra rare set. The Admiral has a very unique cabinet design in which the front swings up and rearward to access the chassis for service and adjustments. VERY COOL!! Admiral did a great job designing that set. Wish I had one.

Here's a photo of the ADmiral sitting in my van after we exhumed it from the hoard house.
Exhumed it, that's funny.
At least, we didn't have to call the Medical Examiner. Not much changed in that place, since then.
Reply With Quote
  #22  
Old 11-22-2018, 05:14 PM
Tim Tress Tim Tress is offline
VideoKarma Member
 
Join Date: Feb 2015
Location: Beaver Falls, Pennsylvania
Posts: 106
GE also sold some early 60s color sets, using RCA chassis, the CW and CX. The CW was similar to the CTC11, and the CX was fairly close to the CTC12. I trained on one of those in the early 1970s.
Reply With Quote
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 07:07 AM.



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