Tube-number record
6BL7-GTA
0 archive entries
6BL7-GTA is a tube type in the TubeDatabase archive (class: Twin Triode). Recorded specifications: brand General Electric, construction Dual triode, base Short Intermediate-Shell Octal 8-Pin, socket Octal, maximum plate voltage 500 V, and maximum plate dissipation 10 W. The archive does not yet hold a photographed example of this type.
BrandGeneral Electric
ClassTwin Triode
BaseOctal
Filament6.3 V @ 1500 mA
Construction
Primary TypeDual triode
EnvelopeT-9
Base MaterialShort Intermediate-Shell Octal 8-Pin
Sections2
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Each Section | 250 V | 7000 | 2150 | 15 | 40 mA |
| Zero Bias Condition | 150 V | — | — | — | 65 mA |
Application Notes
Section 1 is recommended for vertical oscillator service. For operation in a 525-line, 30-frame television system, duty cycle of the voltage pulse must not exceed 15 percent of one scanning cycle.
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