UCH 71
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ClassTriode-Heptode
BaseLoctal
Filament-V @ 100mA
Construction
Primary TypeTriode-Heptode
EnvelopeGlass
Base MaterialMetal/Glass
Sections2
Filament / Heater
Heater NotesSeries supply (Serienspeisung)
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation1.5 W
Grid 2 Voltage250 V
Grid 1 Voltage-1.3 V
Cathode Current15 mA
H-C Voltage150 V
Audio Performance
Key Features
- HF-Verstärkung
- NF-Verstärkung
- Mischung
- Phasenumkehr
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Oscillator (100V) | 100V | 440 | - | - | 1.9mA |
| Triode Oscillator (200V) | 200V | 450 | - | - | 4.1mA |
| Heptode IF Amplifier | 200V | 2200 | 700000 | - | 5.2mA |
| Heptode Mixer | 200V | 750 | 1000000 | - | 3.5mA |
Application Notes
Triode and Heptode sections can be used independently or coupled (g3H to gT).
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