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HRWB 256 – Tube Gear with Grayson Evans KJ7UM

  SHOW NOTES Grayson’s books available herehttps://www.hollow-statedesigns.com/books 3D Box design tool – Bento3Dhttps://bento3d.design/Grayson’s videoshttps://www.youtube.com/@graysonevans4496 Vacuum tube pad circuit boards for Manhattan style building, from QRP Mehttps://www.qrpme.com/?p=product&id=MET Boat Anchor Manual Archivehttps://bama.edebris.com/​