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6L6 is a palindrome (it reads the same backward as forward).

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6L6 is a tautogram (all words start with the same letter). View more tautograms!


6L6 is the designator for a vacuum tube introduced by Radio Corporation of America in July 1936. At the time Philips had already developed and patented power pentode designs, which were fast replacing power triodes due to their greater efficiency. The beam tetrode design of the 6L6 allowed RCA to circumvent Philips' pentode patent.

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