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ID = 10273
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to SP13C = SPTA
Similar Tubes
Other base:
  CF7 ; SP13

Base British-7-Pin, old (M7A) (Codex=Nf)
Was used by Radio/TV-reception etc.
Filament Vf 13 Volts / If 0.2 Ampere / Indirect / Parallel / series AC/DC

This is the 7pin version of the SP13.

Information source Taschenbuch zum Röhren-Codex 1948/49   
SP13C: Sammlung I.M.
Anonymous 557 Collector

SP13C: Telefunken Werkstattbuch
Wolfgang Bauer

SP13C: Mullard Valves 1936
Peter Hoddow

from Just Qvigstad

Usage in Models 1= 1934 ; 2= 1935 ; 2= 1936? ; 4= 1936 ; 2= 1937 ; 3= 1938

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):14

Collection of a member from D
Collection of a member from D

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