Note
Abstract
Title: The Browning-Drake Receiver
Author: Barry Williams, KD5VC (2012)
Abstract:
This article traces the historical development and technical evolution of the Browning-Drake radio receiver, originating from Glenn Browning and Fred Drake’s 1923 RF transformer research at Harvard University’s Cruft Laboratory.
By strategically placing the primary winding in a narrow slot near the secondary winding, they successfully mitigated destructive capacitive coupling, boosting RF transformer efficiency from roughly 20% to nearly 90%.
The authors outline the early manufacturing partnership with The National Company—which produced the signature "Regenaformer" tuning units—and the subsequent formation of the independent Browning-Drake Corporation in 1927. Additionally, the paper examines the component configurations, tube selections (such as the UV-199 and 201A), and various audio amplification methods utilized in standard and portable "suitcase" models of the era. Finally, the text documents the receiver's expansion beyond commercial broadcast use into early shortwave radio applications, as highlighted in contemporary literature like QST and Radio News.
