The KT63 was originally the N63, and was released in the IO based form in 1937. It is an audio output beam tetrode valve. This exhibit is of American manufacture and also carries the Type designation of 6F6G on the glass.The anode load should be 7,000 Ω.
The 6F6G in an octagonal border.
The Type designation closer view.
Looking up from the base: copper supports for the control grid, round cathode tube and witr grids.The classic envelope is 44 mm in diameter and, excluding the IO base pins, is 103 mm tall.References: Data-sheet, 1040 & 1043. Type KT63 was first introduced in 1937. See also 1937 adverts. |
