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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 ...
EM2 – Top-view, "Magic Eye"-type tuning indicator; has a 6.3 V/200 mA heater and was therefore marketed as C/EM2; identical AM2 except for heater ratings EM4 – Dual-sensitivity, top-view, "Magic Eye"-type tuning indicator, EM34 with a side-contact 8 Base
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 ...
Learn how to download and install or uninstall the Desktop Gold software and if your computer meets the system requirements.
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.
Six months after Clint Eastwood's longtime girlfriend, Christina Sandera, died, the 94-year-old's son is sharing a rare update on how the veteran actor has been holding up.. In a new interview ...
(Reuters) -U.S. lender JPMorgan Chase agreed on Friday to drop its lawsuit against Tesla that accused the electric vehicle maker of "flagrantly" breaching a contract between the two companies in ...
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 .