VMP4G @ The Valve Museum

▼ Menu

Home Search Indexes Equivalents Articles Adverts & Boxes Timeline Collections Donate Contact

VMP4G

Sensibly equivalent^¶ to:

CV1169 CV3785 CV3786 NR45

See also:

CV1169 short entry - VMP4G and W31 Advert

Extras ▼

Marconi TNMoC The National Museum of Computing - Valves Other VMP4G exhibits

The VMP4G is a screened variable &MU; RF amplifier pentode for use in broadcast superhet receivers.

The VMP4 and VMP4K were introduced in 1933/4. This improved version the VMP4G was introduced in 1935 as a glass enveloped version when the Catkin valves were phased out.

See also VMP4G with most of the external metal screen missing.

The reverse is plain paint with the letters P and VP.

The classic envelope is 39 mm in diameter, and excluding the B7 base pins is 103 mm tall.

References: Data-sheet & ¹⁰⁴³. Type VMP4G was first introduced in 1935. See also 1935 adverts.

Pin Connections

B7	1	2	3	4	5	6	7	tc
	m	g1	g3	h	h	k	g2	a

Absolute Maximum Operating Conditions^¶

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm
	4.0	1.0	250	100	-2	8.0	5.0	2.7

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated June 18, 2020.

Return to Main Index