← BrowseVEB Röhrenwerk 'Anna Seghers' Neuhaus (GDR/East Germany)Data: LowLow quality — significant gaps in core data (missing base, heater, universal parameters, or pins). Treat as a research stub; always cross-reference with datasheets.
Known Equivalents & Substitutes
No known equivalents. If you know of any, use the ⚑ Report Issue button above.
Similar Tubes (Not Drop-In Compatible)
Tesla equivalent of 4P1L on Loctal base Electrically related DHT pentode but on Loctal base (different socket) with 2.1V/4.2V filament instead of 4.8V/2.4V Wehrmacht predecessor with similar topology but Loctal base and lower filament voltage Electrical Specifications
Heater
Heater VoltageHeater Voltage4.8V
Heater CurrentHeater Current0.28A
Notes
- East German production — VEB Röhrenwerk 'Anna Seghers' in Neuhaus am Rennweg, one of the main GDR tube manufacturers.
- DHT (directly heated cathode) with centre-tapped filament. Can be wired 4.8V @ 0.28A (parallel ends) or 2.4V @ 0.56A (series via centre tap).
- Noval (B9A) base — distinguishes it from the Loctal-based 4P1L/RL2,4P6/4L20 family that it is otherwise electrically related to.
- Relatively obscure tube — complete published electrical specifications are sparse outside Radiomuseum references.