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7C4

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ID = 5128
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Signal Diode - one single system   UHF 
Identical to 7C4 = VT-243 = 1203_Sylvania = 1203A
First Source (s)
26.Mar.1943 : Tube Lore (I)
26.Mar.1943 : Electron Tube Registration List

Base Loctal-8, B8G (Sylvania, 1938) (Codex=Wh)
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.15 Ampere / Indirect / Specified voltage AND current AC/DC
Description

420V PIV at 9mA.

 
Tube prices 3 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
Tube Lore (II)

7c4.png
7C4: Internet
Miguel Angel Trujillo-Rodriguez

lo101_g.gif 7C4: RTT Schwandt
Günther Stabe † 19.8.20


Just Qvigstad
7c4_techdat01.png
7C4: Sylvania Technical Manual
Peter Hoddow

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Usage in Models 1= 1948 ; 1= 1950

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2

Collection of

 
7c4frent.jpg

7C4
 

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