Anyone see this?

http://www.earlytelevision.org/classified_page.html

First listing under Parts, etc. for Sale

Yep! Called him 2 days ago. He called me back this Am but I missed the call. He said he would call back again this evening.

I just spoke with the owner of the tube. He purchased it new from the RCA distributor as a spare to install in a ct100 that he owned back in the mid 60's. He never got around to restoring the ct100 and so the tube has been sitting in the loft of his barn in Michigan ever since. The ct100 was left with a relative out east and when they closed the business out there the ct100 was trashed with many other electronic items.

He did not know if the 15GP22 was still good as it has not been tested. He is going to try and see tomorrow if the getters are still silver. If they are, then chances are good the tube is still good as it was never even hooked up to a tester since it was received.

I will post here again as soon as I hear anything about the condition of the tube.

Bob

Good luck Bob, I hope they're still silver.

I got a message from the owner of the tube today. He is not sure about the condition of the getters on the tube. He said they are not silver. I am trying to set up a meeting with him to test the tube for him. I am waiting to hear back to see if he wants to take me up on my offer.

More details to come as things develope.

Bob

I hope it's still good, but am doubtfull because of the storage conditions. If it was stored in a barn, it is highly doubtfull the seal would be any good on it due to the extremes in temp. Even if that tube was stored in a climate controlled environment, it would be suspect due to the nature of the design. If the tube is good, it would be worth his asking price, but if bad, pretty high for a dud.

Does anybody know offhand how long the 15GP22 was in production? I didn't realize you could buy a new one in the mid-1960s.

Phil

Does anybody know offhand how long the 15GP22 was in production? I didn't realize you could buy a new one in the mid-1960s.

Phil

An article by EDWARD W. HEROLD in the Proceedings of the IEEE, Vol 64, No. 9, Sept. 1976 says that it was introduced in 1953 and only had limited production in 1954. It doesn't say that production ceased after that, but they seem to imply it.

The article is called "A History of Color Television Displays." I don't think I'll have any luck, but I'll see if they'll let me post it.

John

---

From the 1965 Allied Radio catalog;

15GP22 $135.15
21AXP22A 103.77
21CYP22A 103.75
21FBP22 108.18
21FJP22 119.11

Even if a CRT was bought new in the 1960's, it could have been sitting in a warehouse for years already then. The number of replacement CRTs sold at well over $100 each, plus installation, for the relatively few small-screen color TVs still in use long enough to need a new tube, was probably very small. I would not doubt if less than 100 of those CRTs were ever replaced in consumers' homes nationwide.

From the 1965 Allied Radio catalog;

15GP22 $135.15
21AXP22A 103.77
21CYP22A 103.75
21FBP22 108.18
21FJP22 119.11

Where have all these NOS tubes gone?

- Eckhard

Testing of the tube will most likely occur the weekend of the 28th and 29th.

I believe RCA had excess inventory that was warehoused for sale as replacements. That is probably where replacement tubes came from. RCA also had the ability to rebuild tubes, and from what I uncerstand you could obtain a rebuilt crt and had to return a dud. Of course this is just hearsay and there is no way to confirm this.

Many of the 15G's we see have been renecked and rebuilt. No doubt some of the renecked/rebuilt tubes we see did not pass final inspection and were sent back to be re-worked.

A visitor to my website mentioned that he rebuilt a CT-100 in the 1960s. He got a used 15GP22 that had served in a Conrac reference monitor at a local TV station.

Phil Nelson

Where have all these NOS tubes gone?

- Eckhard

With the exception of the 15GP22, I would assume they went into color TV sets of the early/mid 1960's when their CRTs went out in the early 1970's, only to be thrown out later in the 1970's when something else (fly, yoke, power transformer or tuner) in those failed.

The 15GP22s pose another question. There may have been little demand for those tubes, as so few 15" color roundies had been made, and their owners may have decided to upgrade to a larger picture when their CRTs failed.

In the early 60s (perhaps '62- '63) a local paper ran an ad "new color tvs $75"... Since my parents had not purchased a color tv by that time, I pestered them until we went to take a look at these incredibly cheap sets. It turned out to be a blowout sale of unsold stock of CT-100s, to be sold with the understanding that when the tube failed, that was it... no replacement crts would be available! Well, that was not the deal breaker, since my parents figured that in a few years price/performance of new rectangular color tvs would be reasonable, so this set would only have to serve as a "placeholder" until that time. The problem was that these sets just looked terrible the way they were adjusted at the time. Most people at the sale just walked away, shaking their heads.:thumbsdn:
I think that they ran the same ad the next weekend, with the price reduced to $50.

If I would have known then what I know now, I would have smashed my piggy bank and bought as many as I could.:yes:

jr

In the early 60s (perhaps '62- '63) a local paper ran an ad "new color tvs $75"... Since my parents had not purchased a color tv by that time, I pestered them until we went to take a look at these incredibly cheap sets. It turned out to be a blowout sale of unsold stock of CT-100s, to be sold with the understanding that when the tube failed, that was it... no replacement crts would be available! Well, that was not the deal breaker, since my parents figured that in a few years price/performance of new rectangular color tvs would be reasonable, so this set would only have to serve as a "placeholder" until that time. The problem was that these sets just looked terrible the way they were adjusted at the time. Most people at the sale just walked away, shaking their heads.:thumbsdn:
I think that they ran the same ad the next weekend, with the price reduced to $50.

If I would have known then what I know now, I would have smashed my piggy bank and bought as many as I could.:yes:

jr

Whine, whine, whimper...My "CT-100" story is this: On the other side of Missionary Ridge, in Chattanooga, in 1975, there was a "Bohemian" section of town (Read: Slightly seedy) known as "Brainerd". There was a used radio/TV store/service shop/junk hole in one store front, & one day the guy had in the window a "1957 RCA CT-100" for the magnificent sum of $150. I didn't actually go in & look at it, but it definitely WAS some sort of a '50s era color set...As an impoverished hi-skule senior, whose interests were more along the lines of girls, beer, girls, gas money, & maybe girls, it rated no more than a momentary pang of desire...Besides, where would I put it, how would I get it home, yada, yada, yada...I THINK it could have been a CT-100, that WAS 35 yrs ago & I have slept since then, but I DO remember it having a too-small screen for the cabinet...And the fact it looked almost brand-new. I graduated in May '75, it was far down on the list on my mind, & it was 1978 before I was back in Chattanooga...By then, the TV/Radio/Junque emporium was long since gone... Que Sera, Sera...

This NOS 15GP22 tube is now resting confortably in my TV museum. It tests fantastic on the Beltron with a minimum of 27 seconds hang time on the weakest gun and over 30 on the best.

Congratulations Bob! :D

Unbelievable Bob ! N.I.B. Will look forward to seeing pictures on your CT-100.

What a great find! I bet this won't happen too many more times over the next decade...
Cliff

Way to go, Bob !

This NOS 15GP22 tube is now resting confortably in my TV museum. It tests fantastic on the Beltron with a minimum of 27 seconds hang time on the weakest gun and over 30 on the best.

Congratulations Bob,

It's always nice to see a good NOS 15GP22 turn up. What date was it manufactured and what was your final price?

Best wishes,

W/my luck, I'd drop 'n' bust the damthing in my glee to get it outta the box...Lessee, one busted 15GP22-Almost Unobtanium-, one bigazz Mess to clean up, one trip to the Emergency Room to pull all the glass shards outta my heinie...Listen to the hoots of derision, nay well-deserved DEATH THREATS from youse byrds over tooling up a rare & valuable CRT-Yeah, I think that about sums it up...(grin)

Congratulations Bob,

It's always nice to see a good NOS 15GP22 turn up. What date was it manufactured and what was your final price?

Best wishes,

production date was 48th week of 54. As for price paid I will just say that the market price of a good 15GP22 is now solidly in the vacinity of $2000 and up.

And of course if you should find one in the original box, it may be close to priceless as a collectable.

Thanks for the update Bob.
We can only hope that when these rebuilt and NOS 15GP22s go into service they hold up.
I wonder how Jerome's efforts are going in France?

Best wishes,