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A regenerative receiver, by contrast, could often provide adequate reception with the use of only one tube. In the 1930s the regenerative receiver was replaced by the superheterodyne circuit in commercial receivers due to the superheterodyne's superior performance and the falling cost of tubes.
By the early 1930s National had established a reputation with the amateur radio community based upon their line of regenerative receivers, including the SW-3 and SW-5. National HRO receiver, circa 1938 Logo of National Company, late 1940s. In 1935 National introduced their top-of-the-line HRO receiver. This radio included two RF stages and a ...
Classical regenerative receiver using a single triode vacuum tube. The orientation of the "tickler" coil was carefully adjusted by the operator in order to vary the amount of positive feedback. The regenerative receiver also had its heyday at the time where adding an active element (vacuum tube) was considered costly. In order to increase the ...
An audion receiver makes use of a single vacuum tube or transistor to detect and amplify signals. It is so called because it originally used the audion tube as the active element. Unlike a crystal detector or Fleming valve detector, the audion provided amplification of the signal as well as detection.
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NEWCOMERSTOWN ‒ The vehicles and equipment of the former Newcomerstown Emergency Rescue Squad, Inc. (NERS) are being sold through an online auction.. The auction, conducted by the company ...
The Neutrodyne radio receiver, invented in 1922 by Louis Hazeltine, was a particular type of tuned radio frequency (TRF) receiver, in which the instability-causing inter-electrode capacitance of the triode RF tubes is cancelled out or "neutralized" [1] [2] to prevent parasitic oscillations which caused "squealing" or "howling" noises in the speakers of early radio sets.
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