Radio broadcast .. (1922-30)

Record Details:

Title:
Radio broadcast ..
Date:
1922-30
Publisher:
Garden City, N.Y., Doubleday, Page & company [etc.]
Volume:
Radio broadcast ..
Leaf #:
000109
Language:
English
Collection:
Broadcasting & Recorded Sound
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
Radio Broadcast supported home listeners of the new technology of radio – for building or buying a receiving set to explaining the technology used by the new radio stations. Throughout the magazine shows the cultural influence of radio as it evolved from hobbyist to mainstream. -- David Pierce, 2011
Date Added:
July 19, 2022
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.RADIO BROADCAST . No. 35 Radio Broadcast's Set Data Sheets December, 1929 CROSLEY GEMCHEST MODELS 609 AND 610 171A r 0 00 0 00 OOOOD OMOOO Power Transformer This is a conventional tuned radio-frequency receiver using a grid-leak-condenser detector and two stages of audio-frequency amplification. The output tube is a single type 171\. Plate voltage is obtained from a 280-type full-wave rectifier the output of which is filtered by a choke in combination with a Mershon condenser. The volume control is a variable resistor across the antenna circuit. DAY-FAN MODEL 5091 RADIO RECEIVER I FT 115 Volt A.C.Line mm r-cx_x! ^280 Choke 1 amp Fuse Voice Coil Leads Speaker 1 Field ° Jacks 9 'Power Transformer This Day-Fan receiver incorporates four balanced tuned stages of radio-frequency amplification, a semi-tuned input system, de- tector, one stage of straight audio-frequency amplification, and one stage of push-pull audio-frequency amplification. In the output are two 245-type tubes. Power for the electrodynamic loud speaker field is obtained from the filler system. 118 • • DECEMBER 1929