Antique radios, Old Time Radios

TDD2A

Country:	Great Britain (UK)	Brand:	Mullard Radio Valve Co. Ltd.;
		Developer:	Mullard Radio Valve Co. Ltd.;
		Tube type:	Double Diode-Triode Audio Frequency

Tube ID = 18419

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Identical to	TDD2A
Similar Tubes	Normally replaceable-slightly different: BBC12; DT21

Base	Europe 5-Pin (O5A, B5) (Codex=Fp)
Filament	Vf 2 Volts / If: 0.12 Ampere / -: Direct / -: Battery = /
Description	Top Cap Grid. Metallised bulb only (1935)
Literature	Taschenbuch zum Röhren-Codex 1948/49 -- Original-techn. papers.

TDD2A: TDD2A
Frank Cuffe

TDD2A: Telefunken Werkstattbuch
Wolfgang Bauer

TDD2A: Mullard Valves 1936
Peter Hoddow

Usage in Models	1= 1934 ; 2= 1936? ; 2= 1936 ; 1= 1937?? ; 11= 1937 ; 3= 1938?? ; 12= 1938 ; 1= 1939? ; 10= 1939 ; 3= 1940
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 46

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