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 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. The μ for this valve was 40.

 
Pin Connections

B5	1	2	3	4	5
	a	g1	h	h	k

 
Absolute Maximum Operating Conditions

Triode	Vh	Ah	Va	ra	gm
	4.0	0.65	250	11,500	3.5

This exhibit was last updated on 02 December 2007