Brand

•  CETRON
•  ELECTRON TUBE
•  EUROPE
•  MARQUES DIVERSES / VARIOUS BRANDS
•  ORION
•  PHILIPS
•  RADIOTECHNIQUE
•  RCA
•  TELEFUNKEN
•  THOMSON CSF
•  ULTRON
•  USA
•  WESTINGHOUSE

Interests

•  Audiophiles
•  Collectors
•  Radio hams

Socket

•  B4 - Europa 4 Pin
•  B8A - Rimlock (8 Pins)
•  B9A - Noval (9 pins)
•  Jumbo (845 type, 4 pins)
•  K8A - Octal (8 pins)
•  P8A - Transcontinental (8 pins)
•  UX Base (300B type, 4 pins)

Heating parameters

•  2.5V
•  4V
•  5V
•  6.3V
•  25V
•  30V

Décennie

•  1930
•  1940
•  1950
•  1960
•  1970

Connection on the top

•  With
•  Without