Sensibly equivalent¶ to:
The DK96 dry battery frequency changer from Mullard is from the later range of very low filament consumption valves introduced in 1953. This example is British made. Later DK96 valves were imported. These 25 mA filament valves, introduced in the 1950s, were designed for use in battery portable domestic radio receivers. This type of radio was killed stone dead by the transistor in the early 1960s.
The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 47 mm tall.
References: Datasheet, 1040 & 3002. Type DK96 was first introduced in 1953.
Absolute Maximum Operating Conditions¶
Updated December10, 2015. shape:thin.glass.tube construction:all.glass type:heptode age:1950.1960 base:b7g heater:1.4v pins:7 pin:1.f- pin:2.a pin:3.g2 pin:4.g1 pin:5.g4 pin:6.g3 pin:7.f+.g5