Electrical engineer, Brent Daniel, demonstrates
Electrical engineer, Brent Daniel, demonstrates his portable Super-Heterodyne radio. In 1925 he was able to receive Pacific Coast stations 3000 miles away. Build in carrying case, the radio has 2 super heterodyne receivers, 7 vacuum tubes, multiple large batteries, a loop antenna, and speaker
Picture No
13122897
Media ID
45382128
Size
3000px x 2508px
(785KB)
Credit
Mary Evans / The Everett Collection
Source
Courtesy Everett Collection
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30-40 Antenna Batteries Brent Electromagnetic Innovation Inventors Lcgr1805 Lcgr2018 Loop Radiation Signals Speakers Transatlantic Tubes Vacuum Wireless
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