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12-12-2017, 04:43 PM
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Strange experiment in post-war electrostatic set design
I found this paper while looking for references to the 10HP4 and 7EP4 CRTs used in Transvision kit sets. This has to hold some kind of a record for a television set with the fewest number of tubes until the invention of the first practical transistor and the Compactron. Just 13 tubes, and of the 13, two are only rectifiers, plus a 7JP4 CRT. I own radios with a larger number of tubes...
Also, does anyone have any information on the Sylvania type SR-1022 listed as a larger alternative to the 7JP4. A developmental number for the 8BP4 or 10HP4 perhaps? Anyway, I thought some of you might find this to be an interesting read, I know I did: https://calhoun.nps.edu/bitstream/ha...12/48_Kirk.pdf Last edited by benman94; 12-12-2017 at 04:50 PM. 
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