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Armstrong and his prototype 2nd harmonic superheterodyne. (Radio Broadcast 7/24)


As GE developed the 2nd harmonic set for RCA, a number of problems arose that could only be solved by Armstrong. There must have been a great deal of communication between RCA, GE, Houck and Armstrong during this final phase of development.

 


An invitation to attend a meeting about regenerative receiver radiation.


A request from a British firm to license the superheterodyne.

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