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E280F

Information - Help 
ID = 18576
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to E280F = 7722
Similar Tubes
Other characteristic (electr. data):
  7721 ; D3a
Base Noval, 9 pin miniature (USA pico-9) B9A (Codex=Noval)
Filament Vf 6.3 Volts / If 0.315 Ampere / Indirect / Specified voltage AC/DC
Description

Special quality wideband RF amplifier with a gm of 26mA/V at Ia of 20mA.

 
Text in other languages (may differ)
Tube prices 7 Tube prices (visible for members only)
Information source -- Collector info (Sammler)   Siemens Bereich Röhren Taschenbuch 1972
e280f.gif
E280F: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †     More ...
e280f_sock.png E280F: Ratheiser RTH,3.Aufl.,1964
Egon Penker

Just Qvigstad 		e280f_kennlinie.png
E280F: Ratheiser RTH,3.Aufl.,1964
Egon Penker
More ...
Usage in Models 1= 1955? ; 1= 1958?? ; 1= 1959 ; 1= 1960?? ; 2= 1961? ; 2= 1961 ; 1= 1963? ; 2= 1963 ; 1= 1964?? ; 3= 1964? ; 1= 1965?? ; 1= 1965? ; 1= 1965 ; 1= 1966?? ; 1= 1966 ; 1= 1969 ; 2= 1970??
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):23

Collection of

Collection of a member from D
Tomasz Szczesniak (PL)
Collection of a member from D
Ottmar Rollmann (D)
Reinhard Riek (D)
Georges Werts (B)
Christian Schaufelberger (CH)
Karl - Heinz Bossan (D)
Martin Steyer (D)
Michael Wilhammer (D)
Emilio Ciardiello (I)
Milen Gaigadzhov (BG)
Patrice Zeissloff (F)
Aldo Patriarca (CH)
 
e280f_telefunken.jpg

E280F
 
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