30C17
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BrandEdiswan Mazda
ClassV.H.F. Triode Pentode Frequency Changer
BaseNoval (B9A)
Filament7.4V @ 300mA
Construction
Primary TypeTriode Pentode
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 | 100V | 8500 | - | 20 | 15mA |
| Pentode (Frequency Changer at 200 Mc/s) | 170V | 4900 | - | - | 6.4mA |
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.
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