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Tube Database (7,341 tube types · 1,270 archive entries)

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Tube-number record

13GF7-A

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BrandGeneral Electric
ClassDissimilar Double Triode
BaseNoval (B9A)
Filament13 V @ 450 mA

Construction

Primary TypeTriode
EnvelopeT-9
Sections2

Filament / Heater

MaterialCoated Unipotential
Warm-up Time11s
Heater NotesHeater Warm-up Time: 11 Seconds

Absolute Maximum Ratings

Audio Performance

Key Features
  • Combined vertical-deflection oscillator and amplifier
  • Section one: high-mu triode
  • Section two: low-mu, high-perveance triode

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