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ID = 12852
Brand: Sator (brand of Tungsram for tubes)
Tube type:  Screen-grid Tetrode   RF/IF-Stage   Controlling (mu) 
  Ca. 1925 up to 1945 rare.
Identical to NVS4
Similar Tubes
Normally replaceable-slightly different:
  AS4105 ; E445 ; RENS1214 ; S415N
First year Jun.1932 -- Original prospect or advert ÖRA 06/32, Seite 367

Base Europe 5-Pin (O5A, B5) (Codex=Fc) Top contact screw type
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1.1 Ampere / Indirect

Thomas Lebeth: ÖRA 06/32, Seite 367; SATOR Liste Nr. 4600/VI/32/15; SATOR Liste Nr. 3607/VII/32/5. In der SATOR Preisliste vom 10.03.1933 wird die NVS4 als Ersatzröhre für E445 und E455 geführt, für Telefunken ist jedoch nur die RENS 1214 angegeben. RENS 1274 findet in dieser Liste keine Erwähnung.

Literature Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   
NVS4: M.M.
Michael Mischke

NVS4: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

NVS4: own collection
Peter den Boer

Usage in Models 1= 1932

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

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