The VR100 is an M-OV Type KTW62 supplied during WWII for RAF use. It is a vari-mu IF kinkless tetrode of the 6K7 class but with slightly more gain. Thousands were supplied during the WWII with the KTW62 used in the CR100.

The classic envelope is 36 mm in diameter and, excluding the IO base pins, is 102 mm tall.

References: Private communication, ¹⁰⁰⁵ & ¹⁰⁴³.

 
Pin Connections

IO	1	2	3	4	5	6	7	8	tc
	m	h	a	g2	g3	-	h	k	g1

 
Absolute Maximum Operating Conditions^¶

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	6.3	0.3	250	100	-3	8.0	2.8	0.46M	2.9