Tube-number record
VMP4G
0 archive entries
VMP4G is a tube type in the TubeDatabase archive (class: Variable Mu H.F. Pentode). Recorded specifications: brand Marconi, construction Pentode, socket 7-pin (non-miniature), and maximum plate voltage 250 V. The archive does not yet hold a photographed example of this type.
BrandMarconi
ClassVariable Mu H.F. Pentode
Base7-pin (non-miniature)
Filament4 V @ 1 mA
Construction
Primary TypePentode
EnvelopeMetallised
Filament / Heater
Absolute Maximum Ratings
Plate Voltage250 V
Grid 2 Voltage100 V
Audio Performance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation 1 | 250 V | — | — | — | — |
| Typical Operation 2 | 250 V | — | — | — | — |
| Typical Operation 3 | 250 V | — | — | — | — |
Application Notes
Suitable for H.F. and I.F. amplification. Grid base is normally 25 volts but can be extended by using a series feed to the screen.
Datasheets
Datasheet: VMP4G.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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