Radio Designer's Handbook

Not dated but circa 1940. In blue cloth boards (a little worn, a few small, mild marks, sunned on spine, rubbed and rounded at corners and spine ends). Front free endpaper has been neatly removed, previous owner's name on front paste down, some pencilled notes on the rear endpaper, else internally neat, clean and tight. A clear and practical guide for radio set designers and all radio engineers, covering radio frequencies, audio frequencies, rectification and filtering hum, receiver components, tests and measurements, valve characteristics, general theories and other data etc.