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ID = 1220
Brand: Loewe-(Opta); Deutschland
Tube type:  Double Tetrode   Frequency converter 
Identical to 2HMD
Similar Tubes
Normally replaceable-slightly different:
Heater and shape different:
First year 1932 Tube leaflet collection E.Erb Analysis by original leaflets

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Sp 94)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1.5 Ampere / Indirect / Specified voltage AC/DC

The book "British Rradio Valves The Classic Years; 19926 - 1946" states that this tube was sold in the UK but may have been made from imported parts.

Text in other languages (may differ)
Tube prices 3 Tube prices (visible for members only)
Information source British Radio Valves - The Classic Years: 1926-1946   Page 364, 365, 331 and Supplement, p. 47
Taschenbuch zum Röhren-Codex 1948/49   
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren

2HMD: Loewe Schautung
Adrian Riesen
    More ...
2hmd_loewe_sockel_rm.gif 2HMD: Funkschau Röhrentabelle
Wolfgang Eckardt

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Just Qvigstad
2HMD: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

Usage in Models 1= 1932 ; 4= 1933

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):5

Collection of



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