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CV8020 RF pentode

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This valve measures 50x17mm overall and has a B7G base |
Data below from Z77. The CV Register lists Z77 and both CV138
and CV4014 as possible substitutes.
| Heater voltage | 6.3V |
| Heater current | 300mA |
(Refer to datasheet for Z77 for further information)
| Pin |
Function |
| 1 | Control grid |
| 2 | Cathode |
| 3 | Heater |
| 4 | Heater |
| 5 | Anode |
| 6 | Suppressor grid |
| 7 | Screen grid |
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