The history of the intermediate frequency
By: by Edward H. Loftin.
Published: 1964
Place of publication: [Gloucester? Mass
Language: eng
Number of pages: 151
Subjects: Radio -- Patents.
Other titles: Intermediate frequency.
Notes: "Retyping of a report with binding titled 'The invention of intermediate frequency', being a photostatic copy of material prepared in 1938 and having very limited distribution."