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EF85

Information - Help 
ID = 357
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to EF85 = W719 = 6F19 = 6F26 = 6BY7
Similar Tubes
Other class quality (otherwise equal):
  E85F ; EF865
Heater different:
  3BY7 ; HF85 ; UF85 ; XF85
Multiple differences or of other kind:
  EF805S
First year 1951 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Jun.1951 : Funkschau # 12
Predecessor Tubes EF15   EF43  
Successor Tubes EF89   EF183   EF865  

Base Noval, 9 pin miniature (USA pico-9) B9A
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC
Dimensions (WHD)
incl. pins / tip
22 x 67 x mm / 0.87 x 2.64 x inch
Weight 20 g / 0.71 oz
Tube prices 18 Tube prices (visible for members only)

ef85.png
EF85: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †

no7_1.png EF85: RTT 1974 (Franzis) 13. Auflage
Martin Renz

More ...

Just Qvigstad
ef85_001.png
EF85: Manufacturer's Literature
Emilio Ciardiello

More ...
Usage in Models 29= 1951 ; 15= 1952? ; 109= 1952 ; 5= 1953?? ; 25= 1953? ; 186= 1953 ; 13= 1954?? ; 53= 1954? ; 297= 1954 ; 27= 1955?? ; 56= 1955? ; 290= 1955 ; 21= 1956?? ; 55= 1956? ; 236= 1956 ; 16= 1957?? ; 59= 1957? ; 168= 1957 ; 19= 1958?? ; 37= 1958? ; 134= 1958 ; 7= 1959?? ; 15= 1959? ; 126= 1959 ; 31= 1960?? ; 27= 1960? ; 97= 1960 ; 1= 1961?? ; 30= 1961? ; 79= 1961 ; 7= 1962?? ; 20= 1962? ; 63= 1962 ; 7= 1963?? ; 12= 1963? ; 84= 1963 ; 3= 1964?? ; 7= 1964? ; 40= 1964 ; 9= 1965?? ; 5= 1965? ; 47= 1965 ; 5= 1966?? ; 1= 1966? ; 32= 1966 ; 5= 1967?? ; 5= 1967? ; 14= 1967 ; 9= 1968?? ; 5= 1968? ; 3= 1968 ; 2= 1969?? ; 4= 1969? ; 2= 1969 ; 3= 1970?? ; 1= 1970? ; 1= 1975?? ; 1= 9999?? ; 7= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2667

Collection of

 
tfk_ef85_1.jpg

EF85
 

Variants

The early Philips productions of noval tubes were run on the same lines already in use for rimlock valves. These productions are identifiable by the sharp and regular edge of the base, glass frit bonded or glazed to the body. Another peculiar feature of these tubes is that the electrode pack is firmly welded to some of the base pins, no large mica spacers pressed against the internal wall of the envelope.


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