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H4115D

Information - Help 
ID = 2520
       
Country:
Germany
Brand: Valvo GmbH, Radioröhrenfabrik; Hamburg
Tube type:  Screen-grid Tetrode   RF/IF-Stage   Controlling (mu) 
Identical to H4115D = RENS1274 = E455
Similar Tubes
Normally replaceable-slightly different:
  AS4125
First year 1933 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Sep.1933 : Funkschau

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fc) Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Description

This tube is a variable mu type.

 
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 179, p. 310
Taschenbuch zum Röhren-Codex 1948/49   

9_22.png H4115D: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
vv34_31.png
H4115D: Valvo-Röhren-Daten 1934
Jacob Roschy

Usage in Models 1= 1935

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of

 
h4115d_valvo.jpg

H4115D
 

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