The discussion centers on the need for literature or formulas for calculating a copper clad stub shaped like a right triangle for a helix antenna's output. Participants clarify the term "rectangular triangle," confirming it refers to a right triangle. There is a suggestion that the stub does not necessarily need to be copper-coated, as any conductive material could suffice. The importance of good conductivity is acknowledged, with copper being a preferred choice. Overall, the conversation highlights the well-documented nature of stub matching techniques in antenna design.
