The RK-4D32 is a beam tetrode, for use as an RF power amplifier or oscillator. The anode construction with its auxiliary cooling fins is rated for 47 Watts anode dissipation and 100 Watts output when biased in Class C.
The wide glass tube envelope is 55 mm in diameter and, excluding the B7A base pins, is 115 mm tall.
Reference: Datasheet. Type RK-4D32 was first introduced in 1959.
Absolute Maximum Operating Conditions¶
Updated February 21, 2013. shape:wide.glass.tube construction:all.glass type:beam.tetrode age:1950.1960 base:b7a heater:12.6v pins:7 pin:1.h pin:2.g2 pin:3.hct pin:4.k.s pin:5.k.s pin:6.g1 pin:7.h pin:tc.a