Antique radios, Old Time Radios

OC28

Country:	Germany		Brand:	Valvo Radioröhrenfabrik GmbH; Hamburg
			Tube type:	Transistor Audio Frequency

Tube ID = 33990


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Identical to	OC28
Similar Tubes	Normally replaceable-slightly different: GET9 Different maximum ratings: ASZ15; GET571; GET7; GET8
First Source (s)	Mar.1960 : Valvo-Berichte
Predecessor Tubes	OC16
Successor Tubes	ASZ15

Base	OTHER TUBEBASE in general
Was used by	Radio/TV-reception etc.
Filament
Description	PNP germanium alloy transistor intended as power amplifier / switch in AF applications. Also made by Mullard and Philips related manufacturing plants. Text in other languages (may differ)
Dimensions (WHD)	26 x 40 x 10 mm / 1.02 x 1.57 x 0.39 inch
Weight	10 g / 0.35 oz
Literature	-- Collector info (Sammler) KTT 1969/70


	Empfänger ED80 (Rohde&Schwarz) Heinz Höger

CA
Christian ADAM

TTT Steidle 1981
Günther Stabe

Valvo Taschenbuch 67
Heinz Höger

Usage in Models (calculation each 25th of the month)	1= 1961? ; 1= 1962 ; 3= 1964?? ; 1= 1965?? ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 6

No further Information for

OC28

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