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HRWB 256 – Tube Gear with Grayson Evans KJ7UM

 

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SHOW NOTES

Grayson’s books available here
https://www.hollow-statedesigns.com/books 

3D Box design tool – Bento3D
https://bento3d.design/

Grayson’s videos
https://www.youtube.com/@graysonevans4496 

Vacuum tube pad circuit boards for Manhattan style building, from QRP Me
https://www.qrpme.com/?p=product&id=MET 

Boat Anchor Manual Archive
https://bama.edebris.com/

 

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