Grayson Evans KJ7UM is the author of Hollow-State Design for the Radio Amateur, a wonderful book about using Thermatrons (aka tubes, or valves) in radio projects. Buy it here:
More info on the book is here: https://kj7um.wordpress.com/2020/12/02/hollow-state-design/ In this video, Grayson talks about construction techniques (including the use of Thermatron Me-Pads), and Manhattan construction for Thermatron projects. FB! Visit Grayson's blog: https://kj7um.wordpress.com/
Posts
An Unintended Post-Mortem
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Many of us wind up in a similar situation, I'm sure: we impulse buy at
hamfests—great plans for some big old currently non-working piece of
gear—and then...
1 hour ago
Thermatrons have Lower Noise than transistors??
ReplyDeleteNo noise figure or no noise voltage is shown on the 7788 datasheet. So does anyone have any real data comparing this to a quiet solid-state preamp?? Understand, this is audio he is talking about, not RF/microwave where HEMT's, eat thermatron's lunch.
At least Grayson does believe in shielding, and uses it to make nice looking equipment.
Okay, okay, now I get it- this was a satirical piece! Funny!
I saw a mesmerizing video on the subject of making a mold for the glass base of a Nixie tube:
ReplyDeletehttps://www.youtube.com/watch?v=V_HFiiKI50w
It doesn't have anything to do with radio or thermatrons but I thought it was really interesting.
Chuck