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Batteryless radio
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A batteryless radio is a type of radio receiver that does not require the use of a battery to provide it with electrical power.
A modern clockwork radio with crank in winding position
A modern clockwork radio with crank in winding position
Edward S. Rogers Sr.
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Edward Samuel Rogers Sr. was a Canadian inventor and pioneer in the radio industry who founded the Rogers Vacuum Tube Company and the CFRB radio station in Toronto, Ontario. His only child, Edward S.
Batteryless radio
…amplifying radios, vacuum tube radios, used batteries until the mid to late 1920s. The line-operated vacuum tube receiver was invented in 1925 by Edward S. Rogers, Sr. The unit operated with five Rogers AC vacuum tubes and the Rogers Battery-Eliminator Power Unit (power supply). This unit was later marketed for $120…
Rogers' grave at Mount Pleasant Cemetery
Rogers' grave at Mount Pleasant Cemetery