radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.
Information - Help 

UBL21

Country:  Europe      Brand:  Common type Europe tube 
  Developer:  Philips; Eindhoven (tubes international!); Netherlands 
  Tube type:  Double Diode-Pentode   Power/Output 
Tube ID = 287
  previous  |  next
Identical to UBL21 = UBL71
Similar Tubes Other base and data slightly different:
 UBL1; UBL3
Multiple differences or of other kind:
 CABL21
First year   Feb.1941 Tube leaflet collection E.Erb Analysis by original leaflets (P11)
First Source (s) May.1941 : Radio-Mentor # 5
Feb.1941 : Philips-Buch III
Predecessor Tubes CBL1   UBL1   CBL6   CABL21  
Base Loctal-8, B8G (Sylvania, 1938) (Codex=Wa)
Filament Vf 55 Volts / If: 0.1 Ampere / -: Indirect / -: Series, AC/DC /
Tube prices 5 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   

  ubl21.gif
  UBL21: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
ubl21_triotron.jpg
UBL21: My tubes
Anonymous 413 Collector
 
Variants
 
ubl21_sock.png
UBL21: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
 
ubl21_mullard_data_01.png
UBL21: Mullard - original papers
Wolfgang Romeyke
Usage in Models   6= 1941?? ; 11= 1941? ; 51= 1941 ; 5= 1942?? ; 1= 1942? ; 46= 1942 ; 1= 1943?? ; 5= 1943? ; 31= 1943 ; 4= 1944? ; 48= 1944 ; 2= 1945?? ; 6= 1945? ; 30= 1945 ; 4= 1946?? ; 5= 1946? ; 36= 1946 ; 1= 1947?? ; 4= 1947? ; 29= 1947 ; 7= 1948?? ; 8= 1948? ; 51= 1948 ; 5= 1949?? ; 10= 1949? ; 56= 1949 ; 6= 1950?? ; 7= 1950? ; 31= 1950 ; 2= 1951?? ; 2= 1951? ; 25= 1951 ; 1= 1952?? ; 1= 1952? ; 24= 1952 ; 4= 1953?? ; 3= 1953? ; 12= 1953 ; 2= 1954?? ; 4= 1954 ; 3= 1955?? ; 2= 1955? ; 2= 1955 ; 1= 1956?? ; 5= 1956 ; 1= 1957? ; 8= 1957 ; 2= 1958? ; 2= 1958 ; 1= 1959 ; 4= 1962? ; 1= 1970??
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):   619

  Variants


collection JR
Jacob Roschy
UBL21*tip

UCH21 w/ tip, made by Siemens and Triotron, both Austria

23.Feb.2009

 
   
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]
  
rmXorg