American and English tubes (Amerikanische und englische Roehren) |
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| Manufacturer (Examples) | Tube name / Tube number | System | Remarks | Bemerkungen |
| RCA | 2D21 | Tyatron | ~ EN91 | |
| Chatham Electronics (U.S.A.) | 5R4WGY | Duo rectifier | for military use | |
| Tung-Sol (U.S.A.) | 6L6WGB | Pentode | ||
| Transradio (U.S.A.) | 6V6GT | Pentode | ||
| General Electric (U.S.A.) | 6V6 | Pentode | ||
| RCA | 12A6 | Pentode | ~ VT134 | |
| Ediswan (England) | 12E1 | Pentode | ||
| AEI (England) | 12E1 | Pentode | ||
| ? | 6080 | Duo triode | ||
| Tung-Sol (U.S.A.) | 6550 | Pentode? | ||
| Sylvania (U.S.A.) | OC3 | Stabilizer | 105V | 105V |
Mehr Details zu den amerikanischen Röhren hier.