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CV1239 silica pentode

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This valve measures 360x100mm overall and has 6 connections |
| Filament voltage | 13.0V |
| Filament current | 40.0A |
| Max anode voltage | 10kV |
| Max screen voltage | 2kV |
| Max anode dissipation | 2.5kW |
| Total emission | 2A |
| Max cathode return current | 2A |
| Typical operating conditions |
| Anode voltage | 6kV |
| Screen voltage | 2kV |
| Control grid voltage | -25V |
| Anode current | 60mA |
| Screen current | 2A |
| Mutual conductance | 3.0mA/V |
The connections are given as: Suppressor grid, control grid and filament connections at one end;
and anode and screen grid at the other.

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