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6D6

Sensibly equivalent to:
58 C1408 CV1900 VT-69
    
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The 6D6 is a variable μ pentode for AGC controlled amplifiers at RF and IF in superhet radio receivers.
Electrically the 6D6 (UX6 base) is identical to the Type 58 (UX6 base) and the 6U7G.
The 6D6 is an American type but the base shows that this was made in England and the maker is given as Pilot.
The pilot logo depicting a sailor and a ship's wheel.
The classic envelope is 39 mm in diameter, and excluding the UX6 base pins is 100 mm tall.
References: Datasheet, 1040 & 1043. Type 6D6 was first introduced in 1936.

 

Pin Connections
UX6
1
2
3
4
5
6
tc
h
a
g2
g3
k
h
g1

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.3
250
100
-3
8.2
2.0
0.8M
1.6
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated May 19, 2014.
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