Yes I desperately need to abuyibg some parts [emoji23] (I'll change that in a moment)abuyibg??
I just sold mine to someone in Austria.
I have 3 5842/417A tubes. One is an rca, 2 are stc brand. I bought the stc from ESRC and are nos. I tried them in my TSE but couldn't get the bias voltage adjusted. The B stamped on the box means ESRC tested them. I'll send the three to you and if they work in your design you can send me what they're worth, let's say 15% off eBay value. I'll be away all day, so I may not answer until tonight.
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PM'edI have several. The white box tubes are Raytheon JAN, numbers are the test results.
5842 is quite a lot of tubes...
An externally hosted image should be here but it was not working when we last tested it.
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