The CV283 (commercially the 6AL5W) is a special quality double diode for signal use.
These double diode valves were designed for vision and sound detection in television receivers. Additionally they are recommended for limiting and DC restoration. Each section is internally screened.
The KB/DC identifies this valve as being made to specification K1001 or K1006, the B denotes qualification by a UK authority and the DC identifies the maker as Mullard Radio Valve Co., Whyteleafe.
The diode anode is extended horizontally for heat radiation and ease of fixing to the top and bottom mica discs.
The Mullard logo, British Made and the 6AL5W Type designation.
The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 35 mm tall.
