Forums :: NEW! Web Resources :: Features :: Photo Gallery :: Vintage Radio Shows :: Archives
Support This Site: Contributors :: Advertise


It is currently Jan Thu 20, 2022 9:45 pm


All times are UTC [ DST ]





Post New Topic Post Reply  [ 6 posts ] 
Author Message
 Post subject: RCA-1948 8T243
PostPosted: Jan Wed 12, 2022 6:59 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 1219
Location: Southwestern,Ontario Canada
Hello, I had posted over at videokarma about a RCA 8T243 that came up on FB marketplace. Now another one has popped up that is in better shape (it has the channel changer knobs) and is in better condition than the first one. The question I have is regarding the picture tube and screen mask. The one in rough shape clearly has a 10BP4 picture tube as well as a Double D screen mask. The one in better condition isn't as clearly defined. The screen mask is more "rectangular". So this begs the question, is this still a 10BP4 ? or is it a later rectangular picture tube ? If anyone is familiar with this model and setup, can someone clarify what it is. Thanks in advance.
Tony


Attachments:
RCA-tv.png
RCA-tv.png [ 876 KiB | Viewed 295 times ]
1948 rca-7.png
1948 rca-7.png [ 441.61 KiB | Viewed 295 times ]
Top
 Profile  
 
 Post subject: Re: RCA-1948 8T243
PostPosted: Jan Wed 12, 2022 7:45 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 2518
Location: Lafayette, CO
Those both have 10-inch tubes. Same chassis as 8T241 and 2. The -3 is the more stylish cabinet. RCA put a lot of iron in these. Craig


Top
 Profile  
 
 Post subject: Re: RCA-1948 8T243
PostPosted: Jan Wed 12, 2022 7:51 pm 
Member

Joined: Oct Thu 23, 2014 5:15 pm
Posts: 296
Location: 06475
Here's a link to the service manual for the set. They both take a 10BP4 or 10 BP4A
http://www.earlytelevision.org/pdf/rca_ ... 947-48.pdf


Top
 Profile  
 
 Post subject: Re: RCA-1948 8T243
PostPosted: Jan Fri 14, 2022 3:32 am 
Member

Joined: Nov Fri 30, 2012 3:35 am
Posts: 657
Location: Phoenix, AZ
I have an 8T243, and the mask is rectangular with vertical sides and only the corners rounded ... it's not a 'double-D'. Perhaps RCA made them in both versions?
R/ John
EDIT: Duh, I guess I stated the obvious. But it seems odd that both 'double-D' and rectangular versions were made. Which came first? (I kinda prefer the 'double-D'.)


Top
 Profile  
 
 Post subject: Re: RCA-1948 8T243
PostPosted: Jan Tue 18, 2022 8:50 am 
Member
User avatar

Joined: Apr Mon 16, 2012 5:31 am
Posts: 431
The 8T243 was the first television made in Canada. The US version dates from 1948 so had the rectangular mask. The Canadian version dates from 1949 when RCA went to the double D mask. The most notable construction difference between the US and Canadian version is the IF transformer contruction. The US version used threaded ferrite slugs and the Canadian version Brass threaded screws.

Remember TV broadcasting in Canada did not begin until 1952 and so this set was used likely to watch the early Detroit/ Toledo Ohio broadcasts.


Top
 Profile  
 
 Post subject: Re: RCA-1948 8T243
PostPosted: Jan Tue 18, 2022 1:17 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 1219
Location: Southwestern,Ontario Canada
Thank-You for that bit of information. (the screen masks), It clears things up quite a bit. Also, the differences in build quality (i.f. transformers) between the 2 countries. I know that Canadian versions always had that edge, when it comes to quality (radio cabinets). Too bad things have gone down hill since then.
Tony


Top
 Profile  
 
Post New Topic Post Reply  [ 6 posts ]  Moderators: Mr. Detrola, 7jp4-guy

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 8 guests



Search for:
Jump to:  






































Privacy Policy :: Powered by phpBB