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ID = 1227
Brand: Loewe-(Opta); Deutschland
Tube type:  Double Tetrode   Frequency converter 
Identical to MO44
Similar Tubes
Heater and shape different:
First year 1933 Tube leaflet collection E.Erb Analysis by original leaflets

Base Europe 7-Pin C7A (Hx C, C7, C) 1933 (Codex=sp) Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 35 Volts / If 0.18 Ampere / Indirect / Specified current AC/DC ~ = (Series working)

The book "British Radio Valves The Classic Years: 1926 - 1946" states that this tube was sold in the UK but may have been made from important parts.

Text in other languages (may differ)
Tube prices 1 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
British Radio Valves - The Classic Years: 1926-1946   Supplement, p. 47
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren

MO44: Loewe Schautung
Adrian Riesen

mo44_hx_g_sock.gif MO44: Funkwerk RTT
Wolfgang Holtmann

More ...

Just Qvigstad
MO44: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

Usage in Models 2= 1933

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):2


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