Antique radios, Old Time Radios
21F12
|
Country:
Italy
|
|
| Identical to |
21F12
|
| Similar
Tubes |
Normally replaceable-slightly different:
PL81
|
| Base |
Noval, B9A
Top contact with a cap
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 21 Volts / If 0.3 Ampere / Indirect / Series, AC/DC |
|
|
 |
|
21F12: Mia collezione privata
Giulio Maiocco
|
| |
|
21F12: GBC TUBE CATALOGUE 1968
Giuseppe Feniello
|
| |
|
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