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EF93

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ID = 725
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to EF93 = 6BA6 = W727 = CV454 = PM04
Similar Tubes
Other class quality (otherwise equal):
  5749 ; 6660 ; CK5749
Heater different:
  HF93
Different connections:
  6K4_China ; 6К4П
Other base:
  6DG7 ; EF89F
First year 1950 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Nov.1951 : Funkschau # 22

Base Miniatur-7-Pin-Base B7G, USA 1940
Was used by Radio/TV-reception etc.
Filament Indirect / Specified voltage AND current AC/DC
Tube prices 6 Tube prices (visible for members only)

ef93.png
EF93: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †

6au6wah_so~~1.png EF93: ARRL Handbook 1972
Anonymous 10 Collector

More ...

Just Qvigstad
ef93_techdat01.png
EF93: RCA Tube Manual
Peter Hoddow

More ...
Usage in Models 1= 1950?? ; 1= 1951?? ; 5= 1951 ; 1= 1952?? ; 7= 1952? ; 19= 1952 ; 7= 1953?? ; 15= 1953? ; 69= 1953 ; 12= 1954?? ; 9= 1954? ; 62= 1954 ; 18= 1955?? ; 13= 1955? ; 32= 1955 ; 10= 1956?? ; 5= 1956? ; 30= 1956 ; 5= 1957?? ; 9= 1957? ; 14= 1957 ; 4= 1958?? ; 3= 1958? ; 24= 1958 ; 2= 1959?? ; 6= 1959? ; 21= 1959 ; 13= 1960?? ; 3= 1960? ; 10= 1960 ; 2= 1961?? ; 2= 1961? ; 7= 1961 ; 2= 1962?? ; 5= 1962? ; 2= 1962 ; 1= 1963?? ; 2= 1963? ; 5= 1963 ; 1= 1964?? ; 3= 1964? ; 9= 1964 ; 7= 1965?? ; 1= 1965? ; 3= 1966?? ; 1= 1966? ; 3= 1966 ; 1= 1967? ; 1= 1967 ; 1= 1968?? ; 1= 1968? ; 1= 1969? ; 1= 1970?? ; 1= 1973 ; 1= 9999?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):494

Collection of

 
ef93_philips.jpg

EF93
 

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