The specimen shown is an ML6C (with ceramic base) of WW2 vintage. The ML6 was simply a version of the ML4 adapted for operation in sets powered by vehicle batteries.

ML6s were widely used as RF oscillators in medium-sizes military transmitters.

The classic envelope is 42 mm in diameter and, excluding the B5 base pins, is 100 mm tall.

 
Pin Connections

B5	1	2	3	4	5
	a	g	h	h	k

 
Absolute Maximum Operating Conditions

Triode	Vh	Ah	Va	Vg	mAa	ra	gm	Pout
	6.3	-	200	-13.5	17	3,700	2.7	0.65W

This exhibit was last updated on 06 February 2003