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  #1  
Old 09-08-2016, 05:31 PM
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old_tv_nut old_tv_nut is offline
See yourself on Color TV!
 
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Location: Rancho Sahuarita
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RCA Radio-TV and Electronics 1953-1954

"RCA Radio-TV and Electronics in 1953-1954"
"Review...and a Preview"
by David Sarnoff

http://www.bretl.com/tvarticles/docu...s1953-1954.pdf
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  #2  
Old 09-08-2016, 05:36 PM
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SwizzyMan SwizzyMan is offline
Restoring an admiral c322
 
Join Date: Apr 2015
Location: Side Lake Mn
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Wonder what happened to all those color tubes.
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Admiral C322C2 Regent (Restoring)
RCA CTC-7 Pensbury (Restored)
RCA CTC-5 Westcott (Restored)
CRA CTC--4 Director 21 (Restoring)
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  #3  
Old 09-08-2016, 09:25 PM
Tom9589 Tom9589 is offline
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Those tubes look like they have a metal shell. The shape is not that of a 15GP22. Are these tubes precursors of the 15GP22?
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Old 09-09-2016, 12:03 AM
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Phil Nelson Phil Nelson is offline
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Maybe the tube experts know what those CRTs are. At first, I thought 21AXP22, which has a metal bell, but those tubes seem to have a slightly narrower, longer bell than the 21AXP22 that was in my CTC-4:



The 21AXP22 also came after the 15GP22.

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Phil's Old Radios
http://antiqueradio.org/index.html
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  #5  
Old 09-09-2016, 05:30 AM
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SwizzyMan SwizzyMan is offline
Restoring an admiral c322
 
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Location: Side Lake Mn
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Looks like it could be a C-73547 or possibly a C73293C. I know that the C73293 had its limited production run in 52, but not sure of the C73547 production dates.
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Admiral C322C2 Regent (Restoring)
RCA CTC-7 Pensbury (Restored)
RCA CTC-5 Westcott (Restored)
CRA CTC--4 Director 21 (Restoring)
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  #6  
Old 09-09-2016, 06:54 AM
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benman94 benman94 is offline
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Definitely pre-15G prototype tubes. A member briefly had an operational example before the neck cracked, and a Detroit area collector claims to have an under-vacuum but otherwise untested example in a Sparton prototype. Unfortunately his asking price is far beyond what I'm currently willing to pay; I've remained in touch though and we may be able to make a deal before I leave the area. We'll see I guess...
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