Antique radios, Old Time Radios

EC81

ID = 18581

Country:

Germany

Brand:	Valvo GmbH, Radioröhrenfabrik; Hamburg
Tube type:	Triode, vacuum UHF

Identical to

EC81 = 6R4

Similar Tubes

Different connections:

EC83

Other base:

EC41

First Source (s)

Mar.1949 : -- Original-techn. papers.

Base	Noval, 9 pin miniature (USA pico-9) B9A
Was used by	Technology / Measurement
Filament	Vf 6.3 Volts / If 0.175 Ampere / Indirect / Parallel, (AC/DC defined voltage)
Description	HF 750MHz (Osc), auch von Tesla Prag hergestellt.
Tube prices	5 Tube prices (visible for members only)
Information source


	EC81: corrected version Roland Langfeld

EC81: O.R.
Ottmar Rollmann

EC81: RTT 1964 (Franzis) 10. Auflage
Martin Renz

EC81: Manufacturer's Literature
Emilio Ciardiello

from Just Qvigstad

Usage in Models

1= 1949? ; 2= 1949 ; 1= 1951?? ; 1= 1951 ; 1= 1952?? ; 1= 1952? ; 1= 1952 ; 1= 1953?? ; 4= 1953? ; 2= 1953 ; 1= 1954?? ; 1= 1954? ; 1= 1954 ; 1= 1955?? ; 1= 1955? ; 1= 1955 ; 4= 1956?? ; 3= 1956? ; 1= 1956 ; 1= 1957?? ; 1= 1957? ; 2= 1958?? ; 3= 1958? ; 1= 1958 ; 7= 1960?? ; 1= 1960? ; 1= 1961? ; 1= 1962?? ; 3= 1964 ; 1= 1965 ; 1= 1966?? ; 1= 1967?? ; 1= 1970??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):54

Collection of Jacob Roschy (D)

Collection of Roland Biesler (D)

Collection of Patrice Zeissloff (F)

Collection of Ernst Rykkje (N)

Collection of Wolfgang Bauer (A)

Collection of Karl - Heinz Bossan (D)

Collection of Ottmar Rollmann (D)

Collection of Georges Werts (B)

Collection of Danko Tkalec (HR)

Collection of a member from FIN

Collection of Tomasz Szczesniak (PL)

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