X109
0 Tubes in archive
BrandMarconi
ClassTriode-Hexode Frequency Changer
BaseB9A
Filament19V @ 0.1mA
Construction
Primary TypeTriode-Hexode
EnvelopeTubular
SectionsTwo
Filament / Heater
Heater NotesIndirectly Heated
Absolute Maximum Ratings
Plate Voltage250 V
Grid 2 Voltage100 V
Cathode Current20 mA
Audio Performance
Key Features
- Miniature
- Indirectly Heated
- Frequency Changer
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 100V | 2800 | - | 22 | 10mA |
| Mixer Operation (Hexode) | 175V | 710 | 250000 | - | 4.3mA |
Application Notes
Frequency changer for operation up to 100 Mc/s. Equipment should be designed to minimize microphony. A separate screening can should be used.
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