Tube-number record
6R8
0 archive entries
6R8 is a tube type in the TubeDatabase archive (class: Triple-Diode Triode). Recorded specifications: brand TUNG-SOL, year 1950, construction Multi-section, socket Noval (B9A), maximum plate voltage 250 V, and maximum plate dissipation 2.5 W. The archive does not yet hold a photographed example of this type.
BrandTUNG-SOL
ClassTriple-Diode Triode
BaseNoval (B9A)
Filament6.3 V @ 450 mA
Construction
Primary TypeMulti-section
EnvelopeGlass
Sections4
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage250 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier - Triode | 250 V | 1900 | 8500 | 16 | 9.5 mA |
Application Notes
The 6R8 is a triple-diode low-mu triode using the 9 pin miniature construction. It is designed for service as a combined AM/FM detector and AF amplifier.
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