NR61 / W42 Vari-µ screen pentode
 |
This valve measures 119x40mm overall and has a B7 base. |
This valve also carries the Admiralty Pattern number W265 and the code ZOSJ.
| Heater voltage |
4V |
| Heater current |
600mA |
| Max anode voltage |
250V |
| Max screen voltage |
125V |
| Mutual conductance (Va=250, Vg2=125, Vg3=0, Vg=-3) |
1.5mA/V |
| Pin |
Function |
| 1 |
n/c |
| 2 |
Anode |
| 3 |
Suppressor grid |
| 4 |
Heater |
| 5 |
Heater |
| 6 |
Cathode |
| 7 |
Screen grid |
| TC |
Control grid |
|
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