Videokarma.org TV - Video - Vintage Television & Radio Forums - Roundie Zenith Space Command 400 Epay!

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- Early Color Television (http://www.videokarma.org/forumdisplay.php?f=36)

- - Roundie Zenith Space Command 400 Epay! (http://www.videokarma.org/showthread.php?t=128515)

polaraman

10-01-2007 01:42 AM

Roundie Zenith Space Command 400 Epay!

1 Attachment(s)

Damn, It's in Kansas with Toto!!! It is a SC 400 but has the SC 600 remote.

http://cgi.ebay.com/Vintage-Zenith-C...QQcmdZViewItem

polaraman

kx250rider

10-01-2007 12:08 PM

Same model as mine... I'm not selling at this time, but I'm curious to see what this one brings. It's one of the smallest and easiest-to-handle roundie consoles, which is one reason I picked it to keep. Mine is repaired (not re-capped), and is working fine with a NOS military CRT.

Charles

fujifrontier

10-02-2007 07:39 PM

any pics in operation?

kx250rider

10-03-2007 01:45 PM

Quote:

Originally Posted by fujifrontier (Post 1383014)

any pics in operation?

Here we go :music:

http://i104.photobucket.com/albums/m...sParad07_2.jpg

Charles

freakaftr8

10-03-2007 01:50 PM

OMG!!! Thats a brilliant picture!! Does this set use the 21fjp22 crt as well??

jpdylon

10-03-2007 02:43 PM

Beautiful Charles!

I want that set :drool:

compucat

10-04-2007 06:56 AM

That's a Zenith alright. I'll have to post a picture of mine in operation now.

fujifrontier

10-04-2007 09:50 PM

that's simply glorious...

kx250rider

10-06-2007 10:59 AM

Thanks for the compliments!!

That set has a military surplus CRT; I think it's an HR21GVRP22. HR-something anyway. It isn't any brighter than the regular ones, but it was easier to get convergence and purity. I think they still use those in some airport control tower radar scopes. They're still on the current US Navy inventory sheet, according to one of our members here who is an active Navy tech.

The contrast is probably better because I put the original tinted glass from the Zenith 21FBP22 over the existing bonded glass on the tube. That photo is taken while I had it on for the '07 Rose Parade on New Years.

Charles

Carmine

10-06-2007 02:10 PM

Would that be a black-matrix tube? Where do I find the order sheet for airport surplus? :D

radiotvnut

10-06-2007 03:36 PM

Man, those people that think an old Color TV can't produce a good picture need to see that Zenith in operation. That color picture looks just as good, if not better, than a modern set.

Phil Nelson

10-08-2007 01:06 PM

Quote:

Originally Posted by kx250rider (Post 1389310)

The contrast is probably better because I put the original tinted glass from the Zenith 21FBP22 over the existing bonded glass on the tube.

Pardon my ignorance, but why would tinted glass improve the contrast? And what color of tinting was used?

Phil "just tryin' to learn" Nelson

compucat

10-08-2007 03:59 PM

Is that tube still being made somewhere for the military? If so, it would be nice to find out how to get them.

old_tv_nut

10-08-2007 08:01 PM

Quote:

Originally Posted by Phil Nelson (Post 1392519)

Pardon my ignorance, but why would tinted glass improve the contrast? And what color of tinting was used?

Phil "just tryin' to learn" Nelson

The tinting attenuates room light on the way in and again on the way out, but attenuates the CRT output only once, on the way out. Therefore the blacks are darker with the tint.

The tint was/is almost always neutral gray. There were a few exceptions -IIRC, GE had blue-face tubes for a while.

fsjonsey

10-08-2007 10:49 PM

Is the military still having JAN tubes produced? Not just CRT's, but other tubes?

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