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6U8

Sensibly equivalent to:
6TP1 CV5065 ECF82
See also:
Valves for Bands III, IV & V - A New Phase-splitter - ECF80 and ECF82
    
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The 6U8 (ECF82) is a high slope triode beam tetrode designed for television use as a frequency changer or mixer. It was also found to be effective as an audio phase splitter and was used in the Radford Audio MA/STA Mk2 amplifier.
The triode is on the right and the beam tetrode is on the left.
The design is clearly a beam tetrode as the presence of the bright beam plate indicates.
The thin glass tube envelope is 21 mm in diameter, and excluding the B9A base pins is 48 mm tall.
References: Datasheet & 1040 Type 6U8 was first introduced in 1954.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
a(t)
g1
g2
h
h
a
k,g3,s
k(t)
g1(t)

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.45
250
110
-0.9
5.2
1.9
-
1.9
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated November 10, 2017.
shape:thin.glass.tube construction:all.glass type:triode.beam.tetrode age:1950.1960 base:b9a heater:6.3v pins:9 pin:1.a(t) pin:2.g1 pin:3.g2 pin:4.h pin:5.h pin:6.a pin:7.k.g3.s pin:8.k(t) pin:9.g1(t)
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