Brand

•  ARCTURUS
•  BRIMAR
•  EUROPE
•  GENERAL ELECTRIC
•  HYTRON
•  KENRAD
•  MAGNADYNE
•  MARQUES DIVERSES / VARIOUS BRANDS
•  RCA
•  USA

Interests

•  Audiophiles
•  Collectors
•  Radio hams

Socket

•  B7G - Miniatur (7 pins)
•  B8G - Loctal 8 pins
•  B9A - Noval (9 pins)
•  K8A - Octal (8 pins)
•  U6A (6 Pins)
•  Y8A - German Steel

Heating parameters

•  2V
•  6.3V
•  6.3V / 12.6V according to series or parallel assembly
•  8V
•  12,6V
•  14V

Décennie

•  1930
•  1940
•  1950
•  1970

Connection on the top

•  With
•  Without