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ID = 13053
Great Britain (UK)
Brand: Graham Farish Ltd.; Bromley
Tube type:  Screen-grid Tetrode   Universal 
  Ca. 1925 up to 1945 rare.
Identical to SX2
Similar Tubes
Other shape (e.g. bulb type):
  B262 ; S22

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Er) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.2 Ampere / Direct / Battery =

Amplion and Graham Farish Ltd. were some known manufacturers of this tube. Graham used RING as brand name.

Dimensions (WHD)
incl. pins / tip
39 x 120 x 32 mm / 1.54 x 4.72 x 1.26 inch
Weight 46 g / 1.62 oz
Information source Braunbuch-Beschreibung (ARD, IRT)   P. 264 & Supplement, p. 41
Wireless World (The), London (WW, 79)   November 22, 1935
-- Collector info (Sammler)
Taschenbuch zum Röhren-Codex 1948/49

s_2_g_6.gif SX2: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20

Just Qvigstad

Collection of



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