Edwin H. Armstrong
Tech's Filing Cabinet Miscellaneous General Electric RCA Tube Tech Semi Tech Audio Radio Components

Books and articles on radio/RF technology. See the GE and RCA sections for their radio coverage.


Microwave Associates 1962 Varactor Harmonic Generation - Using varactor (variable-capacitance) diodes as frequency multipliers up to thousands of Megacycles.

Newark 1937 Ham Radio Flyer - This is an 8-page catalog from Newark Radio in Chicago geared for ham radio customers. It gives a nice snapshot of the radio art in 1937.

FTR - Data from FTR (Federal Telephone & Radio).

Hazeltine - R&D papers from Hazeltine Corp.

Radio Technology Articles - Interesting radio technology.

FM History Articles - History of the development of FM, especially FM broadcasting.

FM Technology Articles - FM radio technology.

SSB Articles - The history and technology of early Single-Side-Band (SSB).


The 1921 Transatlantic Tests - The history of the famous 1921 transatlantic tests, from both sides of the Atlantic.