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ID = 3921
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Tung-Sol Electric Inc.; Newark (NJ) 
Tube type:  Triode, vacuum   UHF 
Identical to 7E5 = 1201_Sylvania = CV2704 = 1201A
Similar Tubes
Normally replaceable-slightly different:
First Source (s)
26.Mar.1943 : Tube Lore (I)

Base Loctal-8, B8G (Sylvania, 1938) (Codex=Kf)
Filament Vf 6.3 Volts / If 0.15 Ampere / Indirect / Specified voltage AND current AC/DC
Description Mu 36, Gm 3,0mS, 4W. Oscillates up to 750MHz. 
Text in other languages (may differ)
Tube prices 1 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
  7E5: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Anonymous 10 Collector
7E5: O.F.
Otto Frosinn

More ...
7E5: Telefunken Werkstattbuch
Wolfgang Bauer

7E5: Sylvania Technical Manual
Peter Hoddow

More ...

from Just Qvigstad

Usage in Models 2= 1948 ; 1= 1950

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):3

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