11LQ8
0 Tubes in archive
BrandRCA
ClassMedium-Mu Triode, Sharp-Cutoff Pentode
BaseSmall-Button Noval 9-Pin
Filament10.9V @ 0.45mA
Construction
Primary TypeTriode-Pentode
Envelope6-1/2
Base MaterialGlass
Sections2
Filament / Heater
Heater NotesWarmup time: 11 seconds
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation5 W
Grid 2 Voltage300 V
H-C Voltage200 V
Audio Performance
Key Features
- Frame-grid construction
- Low-voltage power supply compatibility
- Sync-separator service
- Video output service
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 125V | 10400 | 4400 | 46 | 15mA |
| Pentode Section (Condition 1) | 125V | 21000 | 55000 | - | 19mA |
| Pentode Section (Condition 2) | 200V | 23000 | 75000 | - | 22mA |
Application Notes
Triode unit useful in sync-separator, sound-IF circuits, and as a general-purpose voltage-amplifier tube. Pentode unit especially suited for video output service.
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