Antique radios, Old Time Radios

AB1

Country:	Europe		Brand:	Common type Europe
			Tube type:	Double Diode Detector

Tube ID = 517


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Identical to	AB1 = A4DD = DD465 = TB1 = TAB1 = WE31
Similar Tubes	Normally replaceable-slightly different: D41_Geco; NDD40 Heater different: BB1 Other base: AB2 Other base and other base diagram: CB1
First Series	Mar.1934 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)	Mar.1934 : Philips Bulletin #D13 Feb.1934 : Toute la radio # 1
Successor Tubes	1935 AB2

Base	Europe 5-Pin (O5A, B5) (Codex=Fc) Top contact with a cap
Was used by	Radio/TV-reception etc.
Filament	Vf 4 Volts / If: 0.65 Ampere / -: Indirect / -: Parallel, (AC/DC) /
Tube prices	1 Tube prices (visible for members only)
Literature	Taschenbuch zum Röhren-Codex 1948/49


	Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse Karel De Reus

JR
Jacob Roschy

RTT 1974 (Franzis)
Martin Renz

Telefunken
Robert Schmalstieg

Usage in Models (calculation each 25th of the month)	1= 1934?? ; 10= 1934? ; 126= 1934 ; 2= 1935?? ; 5= 1935? ; 76= 1935 ; 3= 1936? ; 19= 1936 ; 3= 1937? ; 5= 1937 ; 2= 1938 ; 1= 1947 ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 253

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AB1

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