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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