Sensibly equivalent¶ to:
The NR52 has a magnificent gold metalised finish. It is a British Navy receiving valve whose commercial equivalent is a Mullard 354V triode, a design that dates from 1932. The μ for this valve was 40.
The CV designation for the NR52 is CV1173.
The classic envelope is 40 mm in diameter and, excluding the B5 base pins, is 90 mm tall.
References: Data-sheet & 1043. Type NR52 was first introduced in 1929.
Absolute Maximum Operating Conditions¶
Updated April 07, 2015. shape:classic construction:pinch type:triode age:1920.1930 base:b5 heater:4.0v pins:5 pin:1.a pin:2.g1 pin:3.h pin:4.h pin:5.k