Marked: "Oriole Jr. / Trinum Circuit". On plate: ORIOLE Receiver / Model 90 / Serial 402 / Warning: Trinum Circuit Used in this receiver is patented and infringement will be prosecuted / W-K Electric ...
Marked on receiver unit: "Radio Receiver / World Wide Wireless [General Electric] / Licensed for Amateur and / Experimental Use Only"; on amplifier: "Detector-Amplifier / Vacuum Tube / Model AA-1400-A ...
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