Mil-Spec Roundie...
 

...I just wondered, did anyone make such a beast ? We've all heard horror stories of the early color sets being troublesome...wonder if anyone made one that was made to "Mil-Spec" w/ a notch or 2 better coponents than what was normally provided.

I've a book that RCA published that talks about tricolor monitors and systems for military use. I'll see what it has to say tonight.

I know they had government CRts that were pretty damn decent. Charles put one in a zenith awhile back that had a sweet picture

Good question Sandy. There was bound to have been some made.
Hmm...didn't Radar O'Reilly wear "military specs"? :scratch2:

http://www.speakeasy.org/~fortuoh/radar2.jpg

LOL..that is funny!

Nah...They weren't those butt-ugly "serial killer" plastic frame things...

>>LOL..that is funny!
__________________
"All I know is that I know nothing">>

Wrong war sitcom, that was Shultz on Hogan's Heroes! ; )

Seems the early RCA TM-10 (15") and TM-21 (21") round screen color monitors come as close to over- built military specs. as any roundie. Rack mounted and used in both studio control rooms as well as remote broadcast trucks. both built like a bank vault, and weighed almost as much. 21" pictured here:

http://www.earlytelevision.org/images/RCA-TM21D.jpg

Courtesy ETF site from the John Folsom collection.


-Steve D.

Double hernia!

Charles

Wow!
 

That is one beautiful piece of electronics!
Did the 15" monitors look like that but with smaller CRT?
I suspect there must be a few of those lying around. Am I right?
I bet if I brought one of those to the ETconvention I could make some friends!
LOL
Does anybody here have one? I guess not but I would think(hope) so.

Bobby,

Here's the RCA TM-10A 15" color monitor:

http://www.nrcdxas.org/articles/tm10a/monitor.jpg
-Steve D.

That's really neat!
 

Will somebody be bringing one of these monitors to the next ETconvention? This 15" is super cool. I like the newer 21" version equally.
It would be real neat to see the scehmatic.
Did Sam's have a schematic for those monitors?
Anybody know the chassis #'s?
I'd like to see what the flyback and it's circuitry looks like!
Thanks

Bobby,

Here's about all you need to know about the RCA TM-10A 15" color monitor. A simple Google search will usually provide the answers.

RCA TM-10A Video Monitor:
http://www.nrcdxas.org/articles/tm10a/ Ch


-Steve D.

Steve D. is right about the Tm-21. The transformers and chokes are all hermetically sealed and potted. With the exception of the flyback. All power supplys are regulated and if I remember even the filaments receive DC. It used either a 21cyp22 or a 21fjp22 CRT.
I had a mint example of this set, but sold it to Dan Gustafson 15 or so years ago. Darned Heavy ! Each side of the case has 2 large self retracting road case handles on each side. The chassis is composed of sub assemblies mounted on a frame all cabled together via Jones plugs. An easier set to service couldn't be designed.
According to my copy of "Closed Circuit Television Systems- Color and Monochrome Fundamentals-Planning -Applications" published by RCA in 1958, and prepaired the Government Service Department , RCA Service Company, RCA sold stock studio equipment without special componentry. All devices shown are stock RCA with
the exception of Huston-Fearless camera dollies and mounts.
But if the electronics are built as the TM 21 is built, I don't see how it could have been improved upon at that time.
A paragraph at ther bottom of the title page states " This research was supported in whole or in part by the United States Air Force under contracts AF 30(635)-7557 and
AF 36(600)-3468,Call RM 57-3 , monitored by the Systems Engineering Division, Directorate of Maintainance Engineering , Rome Air Force Depot, Griffiss Air Force Base
New York.
It appears that a tricolor system was installed at Walter Reed Army Hospital for instructional and training purposes.
There are also a couple of photos of monochrome cameras being used to provide support of remote defusing of bombs.
I hope this is usefull ! :D

Here is a picture of RCA TK-41 color cameras in action at SAC headquarters in Omaha, Neb. I believe this was in the early '60's. You'll notice the foreground TK-41 is operated by remote control. We had a similar color tv set up here at the Los Angeles Air Force Base, home of the Air Force Space Systems Division, for daily secured closed circuit broadcasts to SAC & the Pentagon. Most equipment was unmodified out of the box.

rca-tk41(sac).jpg
http://www.oldradio.com/archives/har...-tk41(sac).jpg

-Steve D.