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EF42

Information - Help 
ID = 1624
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to EF42 = HF62 = Z150
Similar Tubes
Heater different:
  UF42
Other base and data slightly different:
  6F13
First year 1948 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Sep.1948 : Daten und Schaltungen moderner ... Röhren; Philips # 3A
Mar.1948 : Funkschau # 3
Predecessor Tubes EF14   EF50  
Successor Tubes 1951   EF80  

Base Rimlock base B8A
Filament Vf 6.3 Volts / If 0.33 Ampere / Indirect / Parallel, (AC/DC)
Description steile HF-/ Breitband-Pentode für bis zu 200 MHz, auch als selbstschwingende Mischer geeignet, 
Dimensions (WHD)
incl. pins / tip
22 x 60 x 22 mm / 0.87 x 2.36 x 0.87 inch
Tube prices 16 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   
  ef42.png
  EF42: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
ef42_78rm435s~~2.jpg
EF42: Collection JR
Jacob Roschy

 
ef42_so.png
EF42: rtt
Michael Schlör

 
ef42_data1a.png
EF42: Philips Unterlagen
Josef Pilz


Usage in Models 1= 1948?? ; 1= 1948? ; 5= 1949? ; 6= 1949 ; 5= 1950?? ; 10= 1950? ; 111= 1950 ; 4= 1951?? ; 20= 1951? ; 140= 1951 ; 10= 1952?? ; 22= 1952? ; 81= 1952 ; 7= 1953?? ; 10= 1953? ; 48= 1953 ; 5= 1954?? ; 6= 1954? ; 5= 1954 ; 8= 1955?? ; 3= 1955? ; 14= 1955 ; 5= 1956?? ; 2= 1956? ; 6= 1956 ; 3= 1957?? ; 2= 1957 ; 1= 1958?? ; 1= 1958? ; 2= 1958 ; 3= 1960?? ; 1= 1962?? ; 1= 1969?? ; 1= 1969? ; 2= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):552



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