Quote:
Originally Posted by zenithfan1
Yeah really, I'd love to have that tube, I need one bad. The 21AXP22 was first developed in 1955 and the first set to use it was the RCA 21CT55 using the CTC2B chassis. In 56 it was changed to the 21AXP22A due to small changes and is interchangeable with the first version. I have a 1957 Sylvania that originally used that tube but 56 was the year it was used most. The CTC 4 had a 21AXP22 and the 5 used the "A" version, the 7 used the 21CYP22. I think there was a different phosphor used in the later version of the 21AX.
|
Thank you, that's exactly what we needed. I enjoyed visiting your page - it's a pleasure to see someone saving some of the old consoles that no one wants, as well as starting a collection as a young man. Get ready to hear a lot of "we got rid of that" as the years go on. Won't you feel smug that you were smart enough to save them! Thanks again for the great information.