CRT TRIVIA no programming or shows just hardware ! - AVS Forum
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post #1 of 10 Old 07-06-2014, 01:34 AM - Thread Starter
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CRT TRIVIA no programming or shows just hardware !

No flat panel discussion intended here (well maybe some flatscreen CRT ) that's about it.
Riddles /Answers /sets or broadcast gear/ trivia links /history /video links/images /advertising images or photos of vintage (pre 1966 sets (last of the roundies ) /Triniton tubes /sets history.facts /trivia anecdotal stories,experiencesss images and photos yadda yadda till the end of the Trinitrons . They were the only thing CRT worth talking about for a good while OH we can include the Mitsubishi Diamondtron as well and the RCA invar shadow mask tubes and sets other than these lets try to stick to the oldies


Riddle what is a 15GP22 what does it fit what does it do and where could anybody reliably find one and if so how much working only ?

TV history video 11:55
https://archive.org/details/Story_of_Television_The

Hires Music formats ..............."Why does it sound like a CD ?" ............. can we make it louder "?
"The wireless music box has no commercial value. Who would pay for a message sent to nobody in particular?"
- David Sarnoff's associates at RCA the 1920's -

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post #2 of 10 Old 07-06-2014, 04:24 AM
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https://www.google.com/search?q=15gp...m=122&ie=UTF-8
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post #3 of 10 Old 07-06-2014, 12:18 PM - Thread Starter
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Quote:
Originally Posted by Ratman View Post
Those Google people are very clever don't you think ?.................. it seems as if they know almost anything

Hires Music formats ..............."Why does it sound like a CD ?" ............. can we make it louder "?
"The wireless music box has no commercial value. Who would pay for a message sent to nobody in particular?"
- David Sarnoff's associates at RCA the 1920's -
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post #4 of 10 Old 07-06-2014, 12:23 PM - Thread Starter
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Next question ,

Who made the first Apple TV and what did it do differently and what did it precede . (hint) it was not made by Apple inc. in Cupertino .

Hires Music formats ..............."Why does it sound like a CD ?" ............. can we make it louder "?
"The wireless music box has no commercial value. Who would pay for a message sent to nobody in particular?"
- David Sarnoff's associates at RCA the 1920's -
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post #5 of 10 Old 07-06-2014, 02:05 PM
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Hopefully it has something to do with "Direct View (single tube) CRT Displays".
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post #6 of 10 Old 07-06-2014, 05:31 PM - Thread Starter
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Quote:
Originally Posted by Ratman View Post
Hopefully it has something to do with "Direct View (single tube) CRT Displays".
hint # 2 yes it does no flat panel discussion intended here (well maybe some flatscreen CRT ) that's about it.

Hires Music formats ..............."Why does it sound like a CD ?" ............. can we make it louder "?
"The wireless music box has no commercial value. Who would pay for a message sent to nobody in particular?"
- David Sarnoff's associates at RCA the 1920's -
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post #7 of 10 Old 07-06-2014, 06:42 PM
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Quote:
Originally Posted by tubetwister View Post
(well maybe some flatscreen CRT )
I actually own a 24-in flat-screen SD (4:3) CRT! Alas, it died, and that is when I replaced it with a off topic for this forum. (If really interested, open spoiler below.)
Spoiler!

My very humble setup:
Man Cave:Vizio E500i-A1 "Smart TV" (50-in 1080p 120Hz LED/LCD, has Netflix app.), Blu-ray players (Sony BDP-S3100, old LG BD390), Roku (the original model: N1000), PC (Windows 7), Comcast Internet (25Mbps/5Mbps).
Bedroom:LG 32LV3400-UA TV (32-in 768p 60Hz LED/LCD), HD DVR (Motorola RNG200N), Xfinity Comcast cable (Digital Starter Package), DVD/VHS player.

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post #8 of 10 Old 07-06-2014, 11:12 PM - Thread Starter
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Quote:
Originally Posted by Mark12547 View Post
I actually own a 24-in flat-screen SD (4:3) CRT! Alas, it died, and that is when I replaced it with a off topic for this forum. (If really interested, open spoiler below.)
Spoiler!
RE tubetwister
I remember those I had a 32" 4:3 Sony SD Trinitron Wega and later the 36" 16:9 FD HD Trinitron Wega they were both pretty cool .
Wegas were heavy monsters though ,wouldn't be surprised if the screens were bulletproof , they had the usual Flat CRT baked in geometry issues and sometimes looked a bit odd trying to draw a large circle now and then .


What's a Samson never heard of the guy can't find it on Google either sure you don't mean Samsung ?
lots of those around

Hires Music formats ..............."Why does it sound like a CD ?" ............. can we make it louder "?
"The wireless music box has no commercial value. Who would pay for a message sent to nobody in particular?"
- David Sarnoff's associates at RCA the 1920's -

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post #9 of 10 Old 08-12-2014, 07:32 PM
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Quote:
Originally Posted by tubetwister View Post

Riddle what is a 15GP22 what does it fit what does it do and where could anybody reliably find one and if so how much working only ?
e
The 15GP22 is the first registered color TV CRT.

You can reliably find one about three feet in front of me, currently showing
"America's Got Talent". There are about 150 total known,
of which about 36 work. The "typical" quoted price of a whole set (RCA
CT-100) with a good one is $4000-4500, however recent ones have been
varied quite a bit in price, up or down. After a rather long dry period several have shown
up -- good or bad .. in the last two years.

Trivia question: how many adjustments are there in the "usual" set using
that tube, the CT-100? Answer .. I counted this morning .... 81. There are
two too few to do a "full" color calibration unless you use 1% resistors in the
color matrix, which thankfully my set is close to by accident.

Question: what was the first flat screen color CRT? Answer ... the 15GP22.
That's actually true ... while it has a curved front the screen is not on
the front glass, but rather on a flat piece of glass inside it. Because of this
it only has a real 11.5 inch picture.

What does the picture look like on one? Very, very good indeed, as good
as an NTSC set can look without a digital de-interlacer. This set has excellent
color resolution with no fringes. Until digital innard NTSC sets came along
only the CT-100 and the 21 inch set using the same signal chain
had full 1.5 MHz color resolution, and zero "wrong color fringes" at
color transitions. Downside is that the 15GP22 had inefficient phosphors
and is not very bright.

As to the "Apple" tube, the first consumer products were sold by Sony
under the trade name "Indextron". There were earlier uses by the military.


Google Indextron or "Philco Apple CRT".

Question: who made the first consumer product with a CRT
labeled "Chromatron", which was a competitor to the Apple tube
in the non three separate gun (as used in the 15gp22) race,
and why wasn't it actually a Chromatron, and what
succeeded it (hint: that was a huge commercial success)?
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post #10 of 10 Old 08-14-2014, 09:15 AM
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Fascinating stuff.

http://www.earlytelevision.org/15GP22.html
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