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  #1  
Old 09-04-2007, 06:21 PM
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Large early projection TV on Ebay

What is it? Dumont? US Television?

polaraman

http://cgi.ebay.com/ws/eBayISAPI.dll...ayphotohosting
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  #2  
Old 09-04-2007, 06:42 PM
Steve K Steve K is offline
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It's a U.S. Television Model T525.

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  #3  
Old 09-05-2007, 12:58 AM
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Man what a screen size! I don't think I've ever seen a vintage projection set with an almost modern looking screen that is that big. I tend not to have interest in projection sets so I am ignorant to a lot of their charicteristics.

How big is that screen. Just a guess I would think 24" or better.......
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  #4  
Old 09-05-2007, 11:22 AM
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I've never seen this wood version with the pop-up... I've had & seen 4 or 5 of the 7'-tall leatherette box style UST Window to the World sets.

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  #5  
Old 09-05-2007, 01:25 PM
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I have some additional info on this set on my web site:

http://www.myvintagetv.com/united_states_television.htm

It is a huge set, but picture quality is fair.


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  #6  
Old 09-05-2007, 10:02 PM
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I have some additional info on this set
30KV on the tube -- zounds!

Phil Nelson
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  #7  
Old 09-05-2007, 11:44 PM
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30KV on the tube -- zounds!

Phil Nelson
And even that doesn't help the brightness on this set.



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  #8  
Old 09-09-2007, 05:30 PM
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No Schmidt!

This set is dimmer because it uses an f 1.9 lens instead of a reflecting mirror.

There are pictures and a description of the CRT and lens assembly in Chapter 11, 'Projection Receiver Systems' on pages 226 and 227 of the 1953 McGraw-Hill book 'Principles of Television Servicing' by Rabinoff and Wolbrecht.

I wonder how bright the picture would be if a 5AZP4 or a 4820A CRT were installed?
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  #9  
Old 09-10-2007, 07:00 PM
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I wonder how bright the picture would be if a 5AZP4 or a 4820A CRT were installed?

Been there, done that, no improvement....


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  #10  
Old 09-19-2007, 09:30 PM
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pictures of it in operation?
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Another idea.....instead of expensive anti-psychotic drugs, let's provide schizophrenics with dummy bluetooth headsets. They'll easily blend into the crowd, although I suspect their "conversations" would be far more rational than those of the typical Wal-Mart shopper.

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  #11  
Old 09-19-2007, 11:09 PM
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pictures of it in operation?
Funny thing you should ask, I just happen to have one:










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  #12  
Old 09-19-2007, 11:50 PM
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Funny thing you should ask, I just happen to have one:










I LOL'D.
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  #13  
Old 09-20-2007, 11:09 AM
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Quote:
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Funny thing you should ask, I just happen to have one:












WOW: That's much brighter than my RCA 8PCS41 that I recapped and got working

Charles
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  #14  
Old 09-20-2007, 09:18 PM
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and much better than my RCA 21-T639 i wish i could get working
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Quote:
Originally Posted by TVTeufel


Another idea.....instead of expensive anti-psychotic drugs, let's provide schizophrenics with dummy bluetooth headsets. They'll easily blend into the crowd, although I suspect their "conversations" would be far more rational than those of the typical Wal-Mart shopper.

Ron
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