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VT-107A

Sensibly equivalent to:
6V6GT
See also:
Tetrodes with Screen Feedback - The 'Microamp'
    
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The VT-107A is the US Government code for the 6V6GT and both are on the base of this RCA Valve.
The 6V6 family of beam tetrodes came in many constructions and were very popular as the final audio stage of broadcast receivers. The original 6V6 was an American metal can valve from the mid 1930s, and one of the first valves on an IO base.
The valves were capable of push pull use but the normal environment was as a single end output stage. With the revival of interest in valve hi-fi the 6V6 has again found popularity and a pair in push-pull will deliver 10 Watts with low distortion.
The glass carries the etched octagonal lozenge with the Type designation within.
The wide glass tube envelope is 29 mm in diameter and, excluding the IO base pins, is 67 mm tall.
References: Datasheet, 1040 & 1043. Type VT-107A was first introduced in 1936.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
m
h
a
g2
g1
nc
h
k

 

Absolute Maximum Operating Conditions
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
Pout
D
6.3
0.45
315
225
-13
34
2.2
77K
3.75
5.5W
12%
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 20, 2019.
shape:wide.glass.tube construction:pinch type:beam.tetrode age:1930.1940 base:io heater:6.3v pins:8 pin:1.m pin:2.h pin:3.a pin:4.g2 pin:5.g1 pin:6.nc pin:7.h pin:8.k
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