Brand

•  AMPEREX
•  ARCTURUS
•  BELVU
•  CIFTE
•  EDICRON
•  ELECTRO HARMONIX
•  EUROPE
•  FIVRE
•  GECOVALVE
•  GENERAL ELECTRIC
•  HALLICRAFTERS
•  HALTRON
•  HYTRON
•  JJ Electronic
•  MAGNADYNE
•  MARCONI
•  MARQUES DIVERSES / VARIOUS BRANDS
•  MAZDA
•  MINIWATT DARIO
•  MULLARD
•  NEOTRON
•  ORION
•  PHILIPS
•  RADIOTECHNIQUE
•  RAYTHEON
•  RCA
•  REFLECTOR
•  RTC
•  RUSSIE
•  SAVEMA
•  SFR
•  SIEMENS
•  STC
•  SYLVANIA
•  TELEFUNKEN
•  THOMSON
•  TUNG-SOL
•  ULTRON
•  USA
•  VINNIZA
•  VISSEAUX
•  WESTINGHOUSE

Interests

•  Audiophiles
•  Collectors
•  Guitarists
•  Radio hams

Socket

•  5AA - Acorn 5 pins
•  7AA - Acorn 7 pins
•  B4 - Europa 4 Pin
•  B5A - Subminiatur (5 wires in line)
•  B7G - Miniatur (7 pins)
•  B8A - Rimlock (8 Pins)
•  B8D - Subminiatur (5 wires)
•  B8G - Loctal 8 pins
•  B9A - Noval (9 pins)
•  B9G - Loctal 9 pins
•  B12C - Duodecar 12 pins
•  K8A - Octal (8 pins)
•  M7A - British 7 pins
•  P8A - Transcontinental (8 pins)
•  U6A (6 Pins)
•  U7A (7 Pins)
•  UY-Base (807 type, 5 pins)
•  Y8A - German Steel

Heating parameters

•  1.2 to 1.4V
•  2.5V
•  2V
•  3V
•  4V
•  6.3V
•  6.3V / 12.6V according to series or parallel assembly
•  7.5V
•  9.5V
•  12,6V
•  13V
•  17V
•  19V
•  21V
•  25V

Décennie

•  1920
•  1930
•  1940
•  1950
•  1960
•  1970

Connection on the top

•  With
•  Without