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ID = 2550
Brand: Sator (brand of Tungsram for tubes)
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to NSS43 = E446 = RENS1284
Similar Tubes
Other base:

Base Europe B5+1Pin (seldom, Eu U) (Codex=Fco) Top contact with a cap.
Filament Vf 4 Volts / If 1.1 Ampere / Indirect / Specified voltage AC/DC
Description The NSS43 was first released with the B5+1 base; however, a later version was released with the normal B5 base, which was indicated by triangle behind the designation. 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
50 x 135 x mm / 1.97 x 5.31 x inch
Weight 60 g / 2.12 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   

13_10.png NSS43: Telefunken Werkstattbuch
Wolfgang Bauer

NSS43: g.h.
Gerhard Heigl

Usage in Models 1= 1933 ; 5= 1934 ; 4= 1935

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):10

Collection of



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