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.
Rogers' grave at Mount Pleasant Cemetery
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.
Edward S. Rogers Sr.
…eliminator" (power supply) that could be used with other manufacturers' receivers to eliminate the expensive batteries. By August 1925, the Rogers batteryless radio was in commercial sales, the first radio receiver in the world to operate from household current. At a time when a schoolteacher might earn $1,000 per…
A modern clockwork radio with crank in winding position