A six tube tuned radio frequency (TRF) receiver employing 201A triodes. Only one tube is in place. Circuit has three radio frequency stages, a detector and two audio stages with transformer coupling.
IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Marked: "Neutrodyne Receiver / Model ...
Portland, Ore. — Researchers at Cornell University have created the world's smallest mechanical oscillator that is capable of being tuned electrically. The nanoelectromechanical system (NEMS), which ...
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