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HRWB 256 - Tube Gear with Grayson Evans KJ7UM

2 tim 36 min•10 februari 2026

In this episode, Grayson Evans, KJ7UM, joins us again to talk about designing and building ham radio gear with tubes, or as he refers to them: thermatrons. Grayson is the author of Hollow-State Design, a book all about tube-type radio equipment. Grayson also provides basic tube radio kits.

Grayson is a great mentor and shares his love for all things thermatron !

Fler avsnitt av Ham Radio Workbench Podcast

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