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ID = 5221
Tube type:  Double Triode 
Identical to 10DE7
Similar Tubes
Heater different:
  13DE7 ; 6DE7

Base Noval, 9 pin miniature (USA pico-9) B9A
Was used by Radio/TV-reception etc.
Filament Vf 9.7 Volts / If 0.6 Ampere / Indirect / Series, AC/DC
Tube prices 2 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
  10DE7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
10DE7: Sammlung PR
Peter Roggenhofer † 25.4.18

10DE7: Datenblatt
Wolfgang Bauer

10DE7: RCA Tube Manual
Peter Hoddow

from Just Qvigstad

Usage in Models 47= 1957? ; 4= 1957 ; 2= 1958? ; 86= 1958 ; 32= 1959? ; 18= 1959

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):189

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