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ECH41

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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 / Specified voltage 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, 
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)
Information source Taschenbuch zum Röhren-Codex 1948/49   
ech41.png
ECH41: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
ri2_g_1~~11.gif ECH41: RTT Schwandt
Günther Stabe † 19.8.20
More ...
Just Qvigstad 		ech41_techdat01.png
ECH41: SEL Handbuch 1964
Peter Hoddow
More ...
Usage in Models 3= 1947?? ; 1= 1947 ; 13= 1948?? ; 2= 1948? ; 7= 1948 ; 8= 1949?? ; 13= 1949? ; 68= 1949 ; 40= 1950?? ; 18= 1950? ; 57= 1950 ; 3= 1951?? ; 11= 1951? ; 31= 1951 ; 2= 1952?? ; 12= 1952? ; 17= 1952 ; 5= 1953?? ; 7= 1953? ; 3= 1953 ; 4= 1954?? ; 3= 1954? ; 1= 1954 ; 4= 1955?? ; 5= 1955? ; 2= 1955 ; 1= 1956? ; 1= 1957 ; 1= 1958?? ; 1= 1958? ; 3= 1958 ; 1= 1965?? ; 4= 9999
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):352

Collection of

Collection of a member from D
Christian Schaufelberger (CH)
Jacob Roschy (D)
Ottmar Rollmann (D)
Collection of a member from FIN
Tor Steinnes (N)
Tomasz Szczesniak (PL)
Danko Tkalec (HR)
Hans Walraven (NL)
Alexander Hofer (A)
 
ech41_66rm463b.jpg

ECH41
 
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