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6SL7GT

Sensibly equivalent to:
CV569 CV1985 ECC35 VT-229
    
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The 6SL7GT is a medium impedance double triode with high gain and superseded the 6SC7. It featured separate cathodes and was designed for use as AF voltage amplifiers, phase splitters and where required as a cascade amplifier of very high gain.
The makers name is not visible but the octagonal surround to the Type designation logo is typical of RCA.
The wide glass tube envelope is 28 mm in diameter and, excluding the IO base pins, is 62 mm tall.
References: Data-sheet, 1043, 3002 & 1040. Type 6SL7GT was first introduced in 1942. See also 1942 adverts.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
g1(2)
a(2)
k(2)
g1(1)
a(1)
k(1)
h
h

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
μ
6.3
0.3
250
-2
2.3
44,000
1.6
70
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 04, 2013.
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