The VP2 is a battery variable-mu amplifier HF pentode dating from the early 1930s. When originally introduced the anode top cap was Bakelite and featured a screw down fixing. See SD20 for style. This exhibit has a modern top cap and is clearly of later manufacture, probably for replacement use.

The classic envelope is 45 mm in diameter and, excluding the B7 base pins, is 110 mm tall.

References: Datasheet, ⁴⁰²⁴ & ¹⁰⁴³. Type VP2 was first introduced^¶ in 1934.

 
Pin Connections

B7	1	2	3	4	5	6	7	tc
	m	g1	g3	f	f	-	g2	a

 
Absolute Maximum Operating Conditions^¶

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	2.0	0.18	135	135	0	3.0	1.25	0.4M	1.5

PDF scanned from an original document held by the museum