Another gem by the General! - Videokarma.org TV - Video

dieseljeep · #1 03-30-2023, 11:28 AM

After reading about the GE 14" portable in a prior thread, I pulled a somewhat interesting 9" GE portable that came out in 1957, off the to-do shelf. GE made only one year of them, model 9T001. Many of the tubes are strange as well as the CRT.
I ordered a few of the odd-ball tubes from ESRC at the time, a couple of 10C8's and 12CT8's.
The CRT's didn't last in any of these sets and were unavailable, except from GE!
Maybe some other VKer has experience with this model.

Electronic M · #2 03-30-2023, 01:06 PM

Is that the one with the HV lead that runs through a socket pin? If so Carl Zimm was going to trade me one for some work at one point, but I forget what happened with that. Those definitely were odd sets.

jr_tech · #3 03-30-2023, 02:24 PM

Quote:

Originally Posted by Electronic M

Is that the one with the HV lead that runs through a socket pin? If so Carl Zimm was going to trade me one for some work at one point, but I forget what happened with that. Those definitely were odd sets.

Yes! AndI believe that the jug is lightweight blown glass (like a 7jp4), rather than molded, like most CRT jugs.

jr

dieseljeep · #4 03-30-2023, 08:43 PM

Quote:

Originally Posted by jr_tech

Yes! AndI believe that the jug is lightweight blown glass (like a 7jp4), rather than molded, like most CRT jugs.

jr

It definately is! Maybe, that's the reason they couldn't be rebuilt.

dieseljeep · #5 03-30-2023, 08:23 PM

Quote:

Originally Posted by Electronic M

Is that the one with the HV lead that runs through a socket pin? If so Carl Zimm was going to trade me one for some work at one point, but I forget what happened with that. Those definitely were odd sets.

I was there in Madison when you were discussing it with him. I thought you were going to bite.

Electronic M · #6 03-31-2023, 09:16 AM

Quote:

Originally Posted by dieseljeep

I was there in Madison when you were discussing it with him. I thought you were going to bite.

I thought I was too. I may still buy that set from him yet.... It's an interesting enough set without being a small colorful metal cabinet 50s portable, and I'm a sucker for colorful 50s metal cabinet portables.

There's a Portillos Hotdog's in IIRC VillaPark or Glenn Elyn IL that's built to look like a gigantic Jukebox, among numerous radios on display and ~2-3 TVs there's one of these GEs IIRC in salmon on one of the record shelves on one of the he support beams....IIRC it's the one closest to the ordering counter, but on the side facing away. Used to frequent the place when I was a kid. I even remember the inside of their previous restraunt on that site (it was part of the previous strip mall structure and was plowed down when they updated the buildings of that strip mall).

dieseljeep · #7 04-02-2023, 09:02 AM

Quote:

Originally Posted by Electronic M

I thought I was too. I may still buy that set from him yet.... It's an interesting enough set without being a small colorful metal cabinet 50s portable, and I'm a sucker for colorful 50s metal cabinet portables.

There's a Portillos Hotdog's in IIRC VillaPark or Glenn Elyn IL that's built to look like a gigantic Jukebox, among numerous radios on display and ~2-3 TVs there's one of these GEs IIRC in salmon on one of the record shelves on one of the he support beams....IIRC it's the one closest to the ordering counter, but on the side facing away. Used to frequent the place when I was a kid. I even remember the inside of their previous restraunt on that site (it was part of the previous strip mall structure and was plowed down when they updated the buildings of that strip mall).

I didn't bother to restore it, the CRT is too wasted! I don't think it can be rejuvenated.

Electronic M · #8 04-02-2023, 03:27 PM

Quote:

Originally Posted by dieseljeep

I didn't bother to restore it, the CRT is too wasted! I don't think it can be rejuvenated.

That's too bad. I just made a similar decision on a porthole set that has a rough cabinet and several destroyed adjustable coils that Sam's doesn't list aftermarket subs for...If the cabinet was nice I'd go to the effort getting coils, and if the electronics were an easy fix I'd fix the cabinet....Both issues at once are enough to convince me to let it be someone else's problem.

Electronic M · #9 04-17-2023, 10:55 AM

Quote:

Originally Posted by dieseljeep

I didn't bother to restore it, the CRT is too wasted! I don't think it can be rejuvenated.

Did you ever try to variac it? I did yesterday and the thing came right up with synced picture and sound! Granted I had to turn the brightness up to max with lots of retrace lines to get picture, but its somehow still going on all original parts.

My tester showed 10-20% emissions (near dead) at rated 4.7V heater, but bottom of good readings at 5.7V...
I'm debating whether to rejuvenate it or unwire the heater wires for the socket from the chassis and add the transformer from a brightener that I stole the base/socket from (once I figure out where I put that transformer) into the heater circuit. I definitely can't directly plug a brightener in given the 5.5KV HV connection in the base!

I think one of those methods could make it usable. Then I gotta debate whether I recap it or not... It's such a clean original I'm tempted to just stick it on a shelf and leave it as is.

bandersen · #10 03-30-2023, 01:30 PM

Some good picture on this website: https://forum.retrotechnique.org/t/t...le-9t001/16416

Chris K · #11 03-30-2023, 02:08 PM

Quote:

Originally Posted by bandersen

Some good picture on this website: https://forum.retrotechnique.org/t/t...le-9t001/16416

OMG that's so cute! C'est magnifique!!!

jr_tech · #12 03-30-2023, 02:15 PM

Some discussion of this cute little set on an earlier thread:

http://www.videokarma.org/showthread...ighlight=green

jr

nasadowsk · #13 03-30-2023, 07:08 PM

Anyone got a datasheet on the CRT? Pictures of the set’s internals look like typical GE build quality…

jr_tech · #14 03-30-2023, 07:37 PM

Quote:

Originally Posted by nasadowsk

Anyone got a datasheet on the CRT? Pictures of the set’s internals look like typical GE build quality…

If I remember correctly.

https://frank.pocnet.net/sheets/093/9/9QP4.pdf

https://picclick.com/9QP4-9-Picture-...949501452.html

jr

dieseljeep · #15 03-30-2023, 08:54 PM

Quote:

Originally Posted by jr_tech

If I remember correctly.

https://frank.pocnet.net/sheets/093/9/9QP4.pdf

https://picclick.com/9QP4-9-Picture-...949501452.html

jr

I looked up the tube in the GE tube manual. The heater rating is 4.7 volts at 300ma. The heater looks a lot different than the heater in the usual B&W CRT.
I ran the heater at about 7volts to try to increase emission.