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UCH11

 
    
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The UCH11 is a triode hexode mixer from 1948. The triode oscillator section is internally connected to the mixer for LO injection.
The Philips Miniwatt and type designation on the metal dome.
The Footless base the pins number clockwise from the top right. This is the Philips way of numbering and we have adopted this for all our valves.
The base that came with the valve.
The connection side of the chassis mounting base.
The wide glass tube envelope is 36 mm in diameter, and excluding the Footless base pins is 37 mm tall.
References: Datasheet & 3002. Type UCH11 was first introduced in 1939.

 

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
ra
gm
μ
20.0
0.1
200
-
-11
19
-
3.2
17
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 14, 2013.
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