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6L7G

Sensibly equivalent to:
CV1950 VT-87A X64
See also:
Pentagrid Converters
    
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The whole point of the 6L7 is to ensure maximum isolation between oscillator and signal, and to provide a mixer which is efficient at VHF where stable oscillation would require a separate VHF oscillator triode. For applications where a self-oscillating mixer (ie. pentagrid converter) could provide adequate performance there were other Octal types specifically designed for this purpose.
The valve has its own screening with an internal metalisation on the inside of the envelope.
The classic envelope is 36 mm in diameter and, excluding the IO base pins, is 96 mm tall.
References: Datasheet, 1043 & 3002. Type 6L7G was first introduced in 1936.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
tc
m
h
a
g2,g4
g3
-
h
k
g1

 

Absolute Maximum Operating Conditions
Heptode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.3
250
150
-6
3.3
8.3
1M
0.35
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 16, 2013.
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