American-Bosch 524A Automotive Radio Schematic
June 1935 Radio-Craft

June 1935 Radio-Craft

June 1935 Radio Craft Cover - RF Cafe[Table of Contents]

Wax nostalgic about and learn from the history of early electronics. See articles from Radio-Craft, published 1929 - 1953. All copyrights are hereby acknowledged.

American-Bosch 524A: In this receiver a unique mechanical design has been utilized to secure an attractive appearance, mechanical stability and desirable service features. The circuit has been designed and adjusted for minimum internal noise, and is equipped with an efficient motor ignition noise trap. The vibrator "B" unit is of latest, non-synchronous type, with readily adjustable contacts. The volume control is designed to maintain good bass response at low volume levels. This set is supplied with a kit of spark suppressors, etc.; the installation manual furnishes complete information on the elimination of noises due to: (1) antenna pickup; (2) antenna lead-in pickup; and, (3) noise conduction into the set via the battery cable.

American-Bosch 524A Radio Schematic

Remarkable improvements in car sets are indicated these diagrams of the new automotive radio receivers shown on the preceding page.

American-Bosch 524A Radio Schematic, June 1935 Radio-Craft - RF Cafe

American-Bosch 524A Radio Description, June 1935 Radio-Craft - RF Cafe

 

 

Posted June 1, 2016

Radio Service Data Sheets

These schematics, tuning instructions, and other data are reproduced from my collection of vintage radio and electronics magazines. As back in the era, similar schematic and service info was available for purchase from sources such as SAMS Photofacts, but these printings were a no-cost bonus for readers. There are 220 Radio Service Data Sheets as of February 2, 2018.