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  2. Magic eye tube - Wikipedia

    en.wikipedia.org/wiki/Magic_eye_tube

    The magic eye (also called a cat's eye, or tuning eye in North America) is a specific type of such a tube with a circular display similar to the EM34 illustrated. Its first broad application was as a tuning indicator in radio receivers , to give an indication of the relative strength of the received radio signal, to show when a radio station ...

  3. Allen B. DuMont - Wikipedia

    en.wikipedia.org/wiki/Allen_B._DuMont

    Magic Eye tube used for tuning in a 1939 Mission Bell Model 410 radio. (green glow) In 1932, DuMont invented the magic eye tube, or Electron Ray Tube, [14] used as a tuning accessory in radios and as a level meter in mono and stereo home reel-to-reel tape recorders. In the 1930s the manufacture of mechanical panel meters were labor-intensive ...

  4. Gonset Communicator - Wikipedia

    en.wikipedia.org/wiki/Gonset_Communicator

    The Gonset could also be connected to an external speaker and used as a public address (PA) system. FT-243 crystal (center) of the type used with the Gonset Communicator. The Gonset's receiver was manually tuned over the unit's frequency range with an analog dial, while the transmitter frequency was controlled by a crystal oscillator .

  5. Russian tube designations - Wikipedia

    en.wikipedia.org/wiki/Russian_tube_designations

    V (Russian: В) – Vacuum tube with secondary emission. L (Russian: Л) – Nonode. Ye (Russian: Е) – Magic eye tube (e.g. used as a tuning indicator). U (Russian: У) – Power triode (was soon deprecated). The 3rd element is a number – a series designator that differentiates between different devices of the same type.

  6. Killing of UnitedHealthcare CEO prompts flurry of stories on ...

    www.aol.com/killing-unitedhealthcare-ceo-prompts...

    The early morning killing of a top health insurance executive in midtown Manhattan Wednesday has unleashed a flurry of rage and frustration from social media users over denials of their medical ...

  7. Circuital - Wikipedia

    en.wikipedia.org/wiki/Circuital

    The album cover is a close-up shot of a Magic eye tube fitted onto vintage radio receivers from the 1930s. The purpose of tuning eyes in these radio sets was to help tune a station in at its strongest point on the dial. So when the perfect frequency was found, the Magic Tuning Eye would be lit up all the way (like the album cover's).

  8. 24 Discontinued '70s and '80s Foods That We'll Never ... - AOL

    www.aol.com/finance/24-discontinued-70s-80s...

    3. Keebler Fudge Magic Middles. Neither the chocolate fudge cream inside a shortbread cookie nor versions with peanut butter or chocolate chip crusts survived.

  9. DuMont Laboratories - Wikipedia

    en.wikipedia.org/wiki/DuMont_Laboratories

    Allen B. DuMont Laboratories, Inc. [2] (printed on products as Allen B. Du Mont Laboratories, Inc., referred to as DuMont Laboratories or DuMont Labs, and DuMont on company documents) was an American television equipment manufacturer and broadcasting company.