radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

UF21

Information - Help 
ID = 2796
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to UF21
Similar Tubes
Other base:
  UF9
First year 1941 Tube leaflet collection E.Erb Analysis by original leaflets (P11)
First Source (s)
May.1941 : Radio-Mentor # 5
Feb.1941 : Daten und Schaltungen moderner ... Röhren; Philips # 3
Successor Tubes UF41  
Base Loctal-8, B8G (Sylvania, 1938) (Codex=Waa)
Was used by Radio/TV-reception etc.
Filament Vf 12.6 Volts / If 0.1 Ampere / Indirect / Specified current AC/DC ~ = (Series working)
Tube prices 2 Tube prices (visible for members only)
Information source Philips Bulletin   Juli 1941
Taschenbuch zum Röhren-Codex 1948/49   
uf21.png
UF21: Internet
Miguel Angel Trujillo-Rodriguez     More ...
uf21_so.png UF21: rtt
Anonymous 10 Collector
More ...
Just Qvigstad 		uf21.png
UF21: Lorenz Empfänger - Röhren
Anonymous 54 Collector
More ...
Usage in Models 3= 1941 ; 1= 1942?? ; 1= 1942 ; 1= 1943? ; 1= 1943 ; 3= 1944 ; 1= 1945?? ; 3= 1945? ; 2= 1945 ; 1= 1946?? ; 2= 1946? ; 8= 1946 ; 2= 1947? ; 4= 1947 ; 3= 1948?? ; 7= 1948? ; 12= 1948 ; 1= 1949?? ; 4= 1949? ; 5= 1949 ; 3= 1950?? ; 3= 1950? ; 6= 1950 ; 3= 1951? ; 3= 1951 ; 2= 1952? ; 1= 1952 ; 2= 1953? ; 1= 1955?? ; 1= 1955 ; 2= 1956 ; 2= 1957? ; 1= 1957 ; 1= 9999
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):96

Collection of

Aldo Patriarca (CH)
Otto Frosinn (D)
Timo Rantasaari (FIN)
Jacob Roschy (D)
Tor Steinnes (N)
Peter Pfeiffer (D)
Karlheinz Fischer (D)
Christian Schaufelberger (CH)
Klaus Rüdiger (D)
Reinhard Riek (D)
Valery Gromov (RUS)
Sándor Selyem-Tóth (H)
 
uf21_19r.jpg

UF21
 
You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
Data Compliance More Information