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ECH41

Information - Help 
ID = 2494
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Tube type:  Triode-Hexode   Frequency converter   Controlling (mu) 
Identical to ECH41 = CF61
Similar Tubes
Other characteristic (electr. data):
  ECH42
First year 1947 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Dec.1947 : Funk-Technik (FT) # 24
Mar.1947 : Daten und Schaltungen moderner ... Röhren; Philips # 3a
Predecessor Tubes ECH21   ECH4  
Successor Tubes 1948   ECH42  

Base Rimlock base B8A (Codex=W)
Filament Vf 6.3 Volts / If 0.22 Ampere / Indirect / Parallel, (AC/DC) /
Description Osz.-/Mischröhre bis 30MHz, Osz.Spannung zw. 7 und 10 Veff, Schirmgitter-Spannungsteiler kann gleichzeitig auch für das Schirmgitter der EAF42 oder EF41 verwendet werden, 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
22 x 66 x 22 mm / 0.87 x 2.60 x 0.87 inch
Tube prices 2 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   

  ech41.png
  ECH41: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
ech41_a.jpg
ECH41: scc
Christian Schaufelberger

 
ri2_g_1~~11.gif
ECH41: RTT Schwandt
Günther Stabe

 
ech41_techdat01.png
ECH41: SEL Handbuch 1964
Peter Hoddow


Usage in Models 3= 1947?? ; 2= 1947 ; 8= 1948?? ; 3= 1948? ; 5= 1948 ; 6= 1949?? ; 7= 1949? ; 64= 1949 ; 42= 1950?? ; 11= 1950? ; 52= 1950 ; 4= 1951?? ; 6= 1951? ; 29= 1951 ; 1= 1952?? ; 11= 1952? ; 12= 1952 ; 5= 1953?? ; 6= 1953? ; 2= 1953 ; 3= 1954?? ; 3= 1954? ; 2= 1955?? ; 4= 1955? ; 2= 1955 ; 1= 1956? ; 1= 1957 ; 2= 1958?? ; 1= 1958? ; 3= 1958 ; 4= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):305


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