Antique radios, Old Time Radios

MPT4

Country:	Great Britain (UK)		Brand:	Marconi-Osram - (Valves/Tubes); GB
			Tube type:	Vacuum Pentode Power/Output

Tube ID = 2913

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Identical to	MPT4 = VT115 = CV1683
Similar Tubes	Other shape (e.g. bulb type): MPT4_5pin_Catkin Normally replaceable-slightly different: TE534 Other base: MPT4_7pin
Successor Tubes	MKT4_5pin

Base	Europe 5-Pin (O5A, B5) (Codex=Ndo) Sidecontact
Filament	Vf 4 Volts / If: 1 Ampere / -: Indirect / -: Parallel, (AC/DC) /
Description	Pa<8W; Typ 2.5W audio output at Va=250; Ia=32mA; Rload=8k. Also available with 7 pin base and in Catkin form.
Literature	Taschenbuch zum Röhren-Codex 1948/49


	MPT4: "Trader" Service Sheet 518 Georg Richter

MPT4
Klaus Rüdiger

MPT4: rtt
Michael Schlör

MPT4: Marconi Datasheet
Georg Richter

Usage in Models	5= 1931 ; 1= 1932? ; 5= 1932 ; 1= 1933?? ; 2= 1933? ; 24= 1933 ; 1= 1934? ; 14= 1934 ; 1= 1935?? ; 1= 1935? ; 9= 1935 ; 2= 1936? ; 16= 1936 ; 2= 1937 ; 1= 1945?
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 85

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