Marked: (Panel nameplate reads) RCA / Radiola 20 / Reg. U.S. Pat. Office / See license notice inside / Radio Corporation of / America. (Under top lid is license & patent notice) Title reads: Radiola ...
Marked: "Radiola 24 / Portable Superheterodyne / Second Harmonic", licensing data also listed. Receiver employs the second-harmonic superheterodyne developed by Edwin Howard Armstrong and Harry Houck.
The radio connection to Philadelphia also touches the receiver side.RCA is still a popular brand name in consumer electronics, and itshistory goes back to Philadelphia as well. But RCA isn’t the ...
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