Antique radios, Old Time Radios

OA72

ID = 34734

Country:

Germany

Brand:	Valvo GmbH, Radioröhrenfabrik; Hamburg
Tube type:	Solid-State-Diode Detector

Identical to

OA72 = OA79

Similar Tubes

Normally replaceable-slightly different:

2AP13 ; 2AP15 ; AA119 ; OA172 ; SFD107

Different maximum ratings:

AA113

First Source (s)

Mar.1957 : Valvo-Berichte

Base	Wires
Filament	Solid State
Description	Germanium contact point high-frequency diode, 60 degrees C max operating temperature. Also made by the other Philips related manufacturers. Text in other languages (may differ)
Dimensions (WHD) incl. pins / tip	5 x 12 x mm / 0.20 x 0.47 x inch
Weight	1 g / 0.04 oz
Information source	- - Manufacturers Literature Valvo-Handbuch 1968, KTT 1969/70


	OA72: Taschen-Lehrbuch "Bastelpraxis" von W. Diefenbach, Franzis Verlag, 1960 Jürgen Küting

OA72: J.K.
Jürgen Küting

OA72: DVT 1971 ECA
Günther Stabe

OA72: Valvo_Dioden_Transistoren_1959
Thomas Günzel

Usage in Models

2= 1955?? ; 2= 1955? ; 5= 1955 ; 8= 1956 ; 3= 1957?? ; 2= 1957? ; 10= 1957 ; 6= 1958? ; 6= 1958 ; 2= 1959?? ; 8= 1959 ; 1= 1960?? ; 10= 1960 ; 6= 1961? ; 1= 1961 ; 6= 1962?? ; 7= 1962? ; 1= 1962 ; 4= 1963?? ; 1= 1964?? ; 1= 1966?? ; 1= 1968

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):93

Collection of Jürgen Küting (D)

Collection of Hermann Fleischanderl (A)

Collection of Günter Kudicke (D)

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