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#1
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The number is not familiar to me and I've seen a lot of old TV's, but not real many Dumonts. Unless you meant, 14QP4? |
#2
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No, it is not a round tube.
Last edited by Crist Rigott; 12-03-2016 at 12:05 AM. |
#3
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Unless, you already have one, I don't think that one would be that easy to source. It's hard enough getting the more common types for the old sets. I jumped on the chance to get a NOS 14QP4 for my Emerson 1956 model AC/DC set. The original was a 14HP4, but I knew the Q was a perfect sub. |
#4
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Here is a list of CRT's that I pretty sure will work. Of course there are others, I just haven't taken the time to do more research. I sent off an email to EFT because they list about 6 from 17" to 21" that will work. I'm guessing that a 19FP4 and a 19KP4 if there are such animals would work also.
17CGP4 17FP4 17GP4 17HP4 17LP4 19QP4 20FP4 20GP4 20HP4 20HP4C 20CP4 20MP4 21AFP4 21FP4 21KP4 21MP4 |
#5
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Keep in mind the width and length of your chassis. There may be yoke(neck length and height) issues with mounting the larger CRT's on that chassis.
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Audiokarma |
#6
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Yes, I've been thinking about that. Thanks.
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#7
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Also, if you buy the tube from that source, MAKE SURE THEY TEST IT BEFORE THEY SEND TO YOU! |
#8
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I know that I am a little late to the party. But I too support building the kit and with new capacitors as mentioned above. I recently acquired an NOS Knight-Kit oscilloscope kit and I am in the process of building it. I have found my capacitors to all be still good. (The kit is from 1966 and most likely the tubular capacitors are Mylar). Resistors are mostly drifted high however. They are replaced.
If you intend to build it, keep us posted and we love pictures! |
#9
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