Brand

• (no filter) 

  AEG (1) MARQUES DIVERSES / VARIOUS BRANDS (7) RCA (2) REPUBLIQUE POPULAIRE CHINE (1) RPC (1) RTC (1) SFR (1) USA (4) VARIAN (1)

Interests

•  Audiophiles (10)
•  Collectors (19)
•  Radio hams (19)

Socket

•  K8A - Octal (8 pins) (2)
•  U7A (7 Pins) (2)

Heating parameters

•  5V (1)
•  6.3V (3)
•  12,6V (2)

Décennie

•  1920 (1)
•  1940 (3)

Connection on the top

•  With (4)