Technical note - development
of the UK domestic superhet 1932 - 39
Warning - this is textbook stuff with some serious algebra and trigonometry included!
The pages are in pdf format, because that's the only way I could think of satisfactorily rendering the mathematical equations and diagrams on the web site. It's about 373KB.
They will open in a full window within your browser if you have "Acrobat" reader installed. Use the "back" button in your browser to return to this point.