ECF 12
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ClassTriode-Pentode
BaseStiftsockel
Filament6.3V @ 300mA
Construction
Primary TypeSteel Envelope
EnvelopeSteel
Base MaterialMetal
SectionsTriode, Pentode
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage250 V
Grid 2 Voltage100 V
Grid 1 Voltage-2 V
Audio Performance
Key Features
- Small dimensions
- HF Pre-stage
- Super-regenerative detector
- FM reception
- Good capacitive decoupling
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode (static) | 100V | 3000 | - | 16.67 | - |
| Pentode | 250V | 2000 | - | - | 5mA |
Application Notes
Specifically designed for frequency-modulated transmitter reception as an HF pre-stage and super-regenerative detector.
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