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Superregenerative receiver
Videos
A superregenerative receiver is a radio receiver that achieves high sensitivity by alternately allowing a resonant circuit to oscillate and then suppressing the oscillation. Edwin Armstrong patented t
Edwin Armstrong presenting the superregenerative receiver at the June 28, 1922 meeting of the Radio Club of America in Havemeyer Hall, Columbia University, New York. His prototype 3-tube receiver was as sensitive as conventional receivers with 9 tubes.
Edwin Armstrong presenting the superregenerative receiver at the June 28, 1922 meeting of the Radio Club of America in Havemeyer Hall, Columbia Univer
An example of a World War II airborne component of the Rebecca–Eureka beacon system. Devices like this were used in the Normandy invasion.
An example of a World War II airborne component of the Rebecca–Eureka beacon system. Devices like this were used in the Normandy invasion.
Edwin Howard Armstrong
Videos
Edwin Howard Armstrong was an American radio-frequency engineer and inventor who developed FM radio and the superheterodyne receiver system.
Superregenerative receiver
…receiver is a radio receiver that achieves high sensitivity by alternately allowing a resonant circuit to oscillate and then suppressing the oscillation. Edwin Armstrong patented the technique in 1922 as an extension of the regenerative receiver. In each cycle, the amplification of a weak received signal grows rapidly…
Sketch of Armstrong, c. 1954
Sketch of Armstrong, c. 1954
Armstrong's boyhood home, overlooking the Hudson River in Yonkers, New York, c. 1975
Armstrong's boyhood home, overlooking the Hudson River in Yonkers, New York, c. 1975
Armstrong explaining the superregenerative circuit, New York, 1922
Armstrong explaining the superregenerative circuit, New York, 1922
Armstrong arranged for the construction of a transmission tower in Alpine, New Jersey, near New York City, and financed demonstration operation of W2X
Armstrong arranged for the construction of a transmission tower in Alpine, New Jersey, near New York City, and financed demonstration operation of W2XMN, the first FM radio station. W2XMN's antenna is mounted between the top two tiers, visible as a vertical line at the far upper right.