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ID = 11252
Brand: Radio-Record - Röhrenmarke; Holland
Developer: Radio-Record - Röhrenmarke; Holland 
Tube type:  Double Grid Power Amplifier   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to G1002
Similar Tubes
Normally replaceable-slightly different:
  B2043 ; PP2018

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fdo) Sidecontact.
Was used by Radio/TV-reception etc.
Filament Vf 20 Volts / If 0.18 Ampere / Indirect / Specified current DC = (Series working)

Tungsram and Radio record used a special constructed tetrode with penthode characteristics to avoid the Philips penthode patent.

Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   section 232, p. 497
- - Manufacturers Literature   1932
Taschenbuch zum Röhren-Codex 1948/49

u_1.png G1002
Peter den Boer

Just Qvigstad
G1002: own collection
Peter den Boer


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