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  2. Regenerative circuit - Wikipedia

    en.wikipedia.org/wiki/Regenerative_circuit

    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.

  3. National Radio Company - Wikipedia

    en.wikipedia.org/wiki/National_Radio_Company

    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 ...

  4. Radio receiver design - Wikipedia

    en.wikipedia.org/wiki/Radio_receiver_design

    A crystal set receiver consisting of an antenna, a variable inductor, a cat's whisker, and a filter capacitor. A crystal receiver is very simple and can be easy to make or even improvise, for example, the foxhole radio. However, the crystal radio needs a strong RF signal and a long antenna to operate.

  5. Regenerative radio receiver - Wikipedia

    en.wikipedia.org/?title=Regenerative_radio...

    This page was last edited on 20 October 2005, at 01:17 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike License 4.0; additional terms may apply.

  6. Eico - Wikipedia

    en.wikipedia.org/wiki/Eico

    They also sold specialty test equipment for the ham radio market, including signal generators and grid dip oscillators. [ 3 ] First located at 84 Withers Street in Brooklyn , New York , [ 4 ] and later at 33-00 Northern Boulevard in Long Island City , [ 5 ] EICO produced hi-fi products in the early 1950s to the mid-1960s with a line of tuners ...

  7. Beloved cigarette lighter found at NY’s Jones Beach in 1960s ...

    www.aol.com/beloved-cigarette-lighter-found-ny...

    Frank Livoti Jr. said his father, Frank Livoti Sr., instantly recognized the significance of the intricate lighter and spent decades trying to locate its owner, whose initials “P.L. Shipley ...

  8. Today’s NYT ‘Strands’ Hints, Spangram and Answers for ...

    www.aol.com/today-nyt-strands-hints-spangram...

    Every helpful hint and clue for Thursday's Strands game from the New York Times.

  9. Tuned radio frequency receiver - Wikipedia

    en.wikipedia.org/wiki/Tuned_radio_frequency_receiver

    A tuned radio frequency receiver (or TRF receiver) is a type of radio receiver that is composed of one or more tuned radio frequency (RF) amplifier stages followed by a detector (demodulator) circuit to extract the audio signal and usually an audio frequency amplifier. This type of receiver was popular in the 1920s.

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