Tube-number record

6BF11

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BrandGeneral Electric

ClassCompactron Dissimilar Double Pentode

BaseCompactron

Filament6.3 V @ 1200 mA

Construction

Primary TypePentode

EnvelopeT-9, Glass

Base MaterialGlass

Sections2

Filament / Heater

Heater NotesAC or DC

Absolute Maximum Ratings

Plate Voltage330 V

Plate Dissipation4.5 W

Grid 2 Voltage145 V

Cathode Current50 mA

H-C Voltage200 V

Audio Performance

Typical THD10%

Power Output2.1 W

Key Features

Compactron design
Low hum
Dual-control pentode section
Power pentode section

Typical Operation

Mode	Plate V	Gm (µmhos)	Rp (Ω)	µ	Plate mA
Section 1 - Class A1 Amplifier	145 V	8600	30000	—	30 mA

Application Notes

Intended for use as an FM detector (Section 2) and audio output amplifier (Section 1) in television receivers. High dynamic plate resistance in Section 1 minimizes hum currents.

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