Tube-number record
UCH 71
0 archive entries
UCH 71 is a tube type in the TubeDatabase archive (class: Triode-Heptode). Recorded specifications: year 1950, construction Multi-section, base Metal/Glass, socket Loctal, maximum plate voltage 250 V, and maximum plate dissipation 1.5 W. The archive does not yet hold a photographed example of this type.
ClassTriode-Heptode
BaseLoctal
Filament— V @ 100 mA
Construction
Primary TypeMulti-section
EnvelopeGlass
Base MaterialMetal/Glass
Sections2
Filament / Heater
Heater NotesSeries supply (Serienspeisung)
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Oscillator (100V) | 100 V | 440 | — | — | 1.9 mA |
| Triode Oscillator (200V) | 200 V | 450 | — | — | 4.1 mA |
| Heptode IF Amplifier | 200 V | 2200 | 700000 | — | 5.2 mA |
Application Notes
Triode and Heptode sections can be used independently or coupled (g3H to gT).
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