| Country: |
United States of America (USA) |
|
Brand: |
Common type USA |
| |
Tube type: |
PENTODE RF/IF-Stage |
|
Tube ID = 9677
|
 |
| Identical to |
257
= 57
|
|
| Base |
6-Pin-Base U6A, old, USA (Codex=Kf)
|
| Filament |
-: Indirect /
If: 1 Ampere /
Vf 2.5 Volts /
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
|
|
|
|
 |
|
Telefunken Werkstattbuch
Wolfgang Bauer
|
|
 |