These may be debated by other builders……note I haven’t built this sized horn so cannot demonstrate its effectiveness – rather, this is my attempt to calculate the dimensions needed. https://www.astronomy.me.uk/wp-content/uploads/2026/01/Optimal-dimensions-of-3m-H-Line-Aperture-Horn-Antenna.pdf Post navigation Notes on SETI-style “Horn of Plenty” horn antenna tuned to H-Line SETI League Excel Spreadsheet Templates (Calculators)
