Tube-number record
30C17
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30C17 is a tube type in the TubeDatabase archive (class: V.H.F. Triode Pentode Frequency Changer). Recorded specifications: brand Ediswan Mazda, construction Multi-section, socket Noval (B9A), maximum plate voltage 250 V, and maximum plate dissipation 1.7 W. The archive does not yet hold a photographed example of this type.
BrandEdiswan Mazda
ClassV.H.F. Triode Pentode Frequency Changer
BaseNoval (B9A)
Filament7.4 V @ 300 mA
Construction
Primary TypeMulti-section
EnvelopeGlass
SectionsTriode, Pentode
Filament / Heater
Heater NotesIndirectly heated—for series operation
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation1.7 W
Grid 2 Voltage230 V
Cathode Current18 mA
H-C Voltage200 V
Audio Performance
Key Features
- Frame Grid construction
- Variable-mu characteristic pentode section
- Gain controlled from A.G.C. line
- Basing identical to 30C15
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode | 100 V | 8500 | — | 20 | 15 mA |
| Pentode (Frequency Changer at 200 Mc/s) | 170 V | 4900 | — | — | 6.4 mA |
Application Notes
Intended for use in television tuners. Can be used in place of 30C15 in existing tuners for a gain increase of 3.5 to 4.0 dB on Bands I and III.
Datasheets
Datasheet: 30C17.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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