Tube-number record
HP 1018
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BrandTungsram
ClassRF Pentode
BaseSpecial / none
Filament10 V @ 0.18 mA
Construction
Primary TypePentode
EnvelopeDOM metallisiert
Sections1
Filament / Heater
Heater NotesIndirectly heated; AC or DC operation
Absolute Maximum Ratings
Plate Voltage250 V
Audio Performance
Key Features
- Bifilar heater to prevent hum
- Suppressor grid (grid 3) available on separate pin
- Metallization connected to grid 3
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Amplifier | 250 V | 1250 | 1200000 | 1500 | 2.3 mA |
| RF Amplifier Low Voltage | 90 V | — | — | — | 2.3 mA |
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