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EC81

Information - Help 
ID = 18581
       
Country:
Germany
Brand: Valvo GmbH, Radioröhrenfabrik; Hamburg
Tube type:  Triode, vacuum   UHF 
Identical to EC81 = 6R4
Similar Tubes
Different connections:
  EC83
First Source (s)
Mar.1949 : -- Original-techn. papers.

Base Noval, 9 pin miniature (USA pico-9) B9A
Was used by Technology / Measurement
Filament Vf 6.3 Volts / If 0.175 Ampere / Indirect / Parallel, (AC/DC)
Description

HF 750MHz (Osc), auch von Tesla Prag hergestellt.

 
Tube prices 5 Tube prices (visible for members only)
Information source
  ec81.png
  EC81: Internet
Miguel Angel Trujillo-Rodriguez
 
ec81_valvo.jpg
EC81: O.R.
Ottmar Rollmann

 
no2.png
EC81: RTT 1964 (Franzis) 10. Auflage
Martin Renz

 
ec81_01.png
EC81: Manufacturer's Literature
Emilio Ciardiello


from Just Qvigstad

Usage in Models 1= 1949? ; 2= 1949 ; 1= 1951?? ; 1= 1951 ; 1= 1952?? ; 1= 1952? ; 1= 1952 ; 1= 1953?? ; 4= 1953? ; 2= 1953 ; 1= 1954?? ; 1= 1954? ; 1= 1954 ; 1= 1955?? ; 1= 1955? ; 1= 1955 ; 4= 1956?? ; 3= 1956? ; 1= 1956 ; 1= 1957?? ; 1= 1957? ; 2= 1958?? ; 3= 1958? ; 1= 1958 ; 7= 1960?? ; 1= 1960? ; 1= 1961? ; 1= 1962?? ; 3= 1964 ; 1= 1965 ; 1= 1966?? ; 1= 1967?? ; 1= 1970??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):54


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