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ID = 15785
Brand: Spanner GmbH, Marken: Delta Valve, Altron, Neo-Delta; Berlin
Tube type:  Triode, vacuum   Power/Output 
Identical to DV52/4
Similar Tubes
Normally replaceable-slightly different:
Heater different:
  DV52 ; DV52/2
First year 1927 Tube leaflet collection E.Erb Analysis by original leaflets

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 3 Volts / If 0.19 Ampere / Direct / Battery =

2 parallele Triodensysteme (Wirkung von zwei DV26).
Für den Betrieb mit 4 V Bleiakku.

Wurde auf Wunsch auch mit Telefunken-4Stift Sockel gefertigt.

Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature
DV52/4: Eigentum, eigenes Foto
Werner Braun

More ...
DV52/4: Manufacturer's Literature
Anonymous 15 Collector

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