A ZIP file of the entire set of calculators from the SETI League website 1/1/2026. https://www.astronomy.me.uk/wp-content/uploads/2026/01/SETI-League-Excel-Spreadsheet-Templates-Calculators.zip Post navigation Suggested dimensions for a 3 metre H-Line Aperture Horn Antenna Calculating dimensions for 1420 MHz hydrogen line cantenna to use as waveguide for 150cm dish
