The LG210 is a dull emitter triode for use as a detector of AF amplifier.
It is difficult to see the electrodes but the 'V' filament is surrounded by a bright wire grid and the anode is mounted at 45 °.
The balloon envelope is 47 mm in diameter and, excluding the B4 base pins, is 83 mm tall.
References: Datasheet & 1043. Type LG210 was first introduced in 1930.
Absolute Maximum Operating Conditions¶
PDF scanned from an original document held by the museum
Updated May 24, 2016. shape:balloon construction:pinch type:triode age:1930.1940 base:b4 heater:2.0v pins:4 pin:1.a pin:2.g1 pin:3.f pin:4.f