STC CV1883 / 4H/182E RF tetrode
 |
This valve measures 138x80mm overall and has an 8-pin base |
Note the CV Register and the EVS data for this valve suggests it is a
4H/180E but this valve and its box are clearly marked 4H/182E.
| Filament voltage |
5V |
| Filament current |
22.5A |
| Filament usable emission |
5A |
| Mutual conductance * |
10mA/V |
| Inner amplification factor * |
3.5 |
| Max direct anode voltage |
2kV |
| Max direct anode current |
300mA |
| Max anode dissipation |
330W |
| Max direct screen voltage |
250V |
| Max direct screen dissipation |
20W |
| Max direct grid dissipation |
20W |
| Max frequency for above ratings |
110MHz |
| Capacitances (measured with a 12" square metal
plate fitted to the screen grid terminal) |
| Cin |
36pF |
| Cout |
13pF |
| Ca,g1 |
0.15pF |
*: At Va=1kV, Vg2=500V, Vg1=-30V
| Pin |
Function |
| 1 |
Filament 1 |
| 2 |
Control grid |
| 3 |
Filament 2 |
| 4 |
Control grid |
| 5 |
Filament 1 |
| 6 |
Control grid |
| 7 |
Filament 2 |
| 8 |
Control grid |
| Shell around base |
Screen grid |
| Finned radiator |
Anode |
|
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