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HZ420

Information - Help 
ID = 15909
       
Country:
Germany
Brand: Valvo Radioröhrenfabrik GmbH; Hamburg
Tube type:  Double Triode   RF/IF-Stage 
Identical to HZ420
Similar Tubes
Normally replaceable-slightly different:
  REZ126 ; VT126_TKD
First year 1928 Tube leaflet collection E.Erb Analysis by original leaflets

Base SPECIAL TUBEBASE in general (Codex=sp)
Filament Vf 4 Volts / If 0.2 Ampere / Direct
Tube prices 3 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
hz4201.jpg
HZ420: J.S.
Jörg Seidel

 
hz420_sock.png
HZ420: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

 
hz420_daten_kennl.png
HZ420: Valvo Daten Heft 1930
Trev Levick


Usage in Models 1= 1928? ; 1= 1928

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


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