Stewart-Warner 345 radio restoration

Stewart-Warner 345 radio overview



Author: Edgardo Castro Bruse
Author: YS1ECB
AUGUSTO EDGARDO CASTRO BRUSE
Calle Loma Linda
Residencial Loma Linda casa No. 4
Col. San Benito.
San Salvador. El Salvador.
San Salvador , January 22 2012



Stewart Warner model 345 battery operated receiver, circa 1926. It would have been one of the later battery operated radios as most makers began producting AC radios in the late 1920's. The Stewart-Warner 345 is a TRF receiver using six 01-A tubes. The first stage is an untuned (aperiodic) RF Stage, coupling the antenna to the radio. The second and third stages are tuned RF amplifiers feeding a tuned detector. Finally the radio has a two stage audio amplifier.
Stewart-Warner 345

Stewart-Warner 345 schematic diagram


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