A worthwhile article, thanks ! 

I have a Bell System publication around here with a photo article on manufacturing of a magnetron. It's in my que to scan that article and make it more widely available.

I remember working in a surplus store in Seattle and seeing WW2 T-R tubes with the box stamped "SLAP THE JAPS". I know some ppl collect artistic tube boxes from the mid and late 1930s. I wonder if some of these boxed WW2 special tubes, like lighthouse or TR survived. 

I also remember a couple years earlier in electronics school, somehow getting across the B+ voltage of a 2K25. One of those occasions where you just have to step aside and think and lecture yourself. 

-Hue Miller

Sent from my Galaxy

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