Sensibly equivalent¶ to:
The VT501 is a small low power VHF transmitting beam tetrode used in WWII, it is also known as the CV1501. This exhibit also carries the old stores code of 10E/389.
This exhibit has mica sheets placed vertically on the outside of the top mica disc to hold the electrodes firmly in the tubular envelope. Our other tubular VT501 does not have this additional support.
The anode is blackened for good heat radiating efficiency. The bright beam plates can be seen within the anode. The screen grid looks to be aligned with the control grid winding. The spacing of the notches confirms this. The control grid has copper supporting rods and a heat radiating fin at the top. The cathode is a flattened tube.
The wide glass tube envelope is 29 mm in diameter and, excluding the IO base pins, is 87 mm tall.
References: Datasheet & 3002.
Absolute Maximum Operating Conditions¶
Updated January 26, 2017. shape:wide.glass.tube construction:pinch type:beam.tetrode age:1930.1940 base:io heater:6.3v pins:8 pin:1.- pin:2.h pin:3.g3 pin:4.g1 pin:5.g2 pin:6.- pin:7.h pin:8.k pin:tc.a