UCH11 @ The Valve Museum

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UCH11

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Valvo TNMoC The National Museum of Computing - Valves Other UCH11 exhibits

The UCH11 is a triode hexode mixer from 1939. The triode oscillator section is internally connected to the mixer for LO injection.

The central spigot has broken off revealing the metal evacuation tube and seal.

The steel shell with rust.

The date seems to be 1944. The BAL 1790 indicates the inspection centre. Wehrmacht was employed between 1936 and 1945.

The wide glass tube envelope is 36 mm in diameter, and excluding the Footless base pins is 39 mm tall.

References: Data-sheet & ³⁰⁰². Type UCH11 was first introduced in 1939. See also 1939 adverts.

Pin Connections

Footless	1	2	3	4	5	6	7	8
	g2,g4	g1	k,m	a	h	h	g3,g1(t)	a(t)

Absolute Maximum Operating Conditions^¶

Hexode	Vh	Ah	Va	Vs	Vg	mAa	mAs	gm
	20.0	0.1	200	200	-18	2.5	3.0	1.9

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated July 27, 2019.

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