Antique radios, Old Time Radios

DC90

Country:	Europe		Brand:	Common type Europe
			Tube type:	Triode, vacuum VHF

Tube ID = 446


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Identical to	DC90
First Series	1952 Tube leaflet collection E.Erb Analysis by original leaflets = [T8 1953]
First Source (s)	Dec.1952 : Funkschau (FS) 1952, Heft 23

Base	Miniatur-7-Pin-Base B7G, USA 1940
Was used by	Radio/TV-reception etc.
Filament	Vf 1.4 Volts / If: 0.05 Ampere / -: Direct / -: Battery = /
Description	Ua: 67.5 V; Ia: 3 mA; S: 1.2 mA/V; Ua max: 90 V; Ik max: 5.5 mA; Text in other languages (may differ)
Dimensions (WHD)	54 x 19 x 19 mm / 2.13 x 0.75 x 0.75 inch
Tube prices	1 Tube prices (visible for members only)


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

Röhrensammlung
Wolfgang Bauer

Valvo Taschenbuch 1962
Simon Reiger

Röhren Dokumente Franzis Verlag
Anonymous 481 Collector

Usage in Models (calculation each 25th of the month)	1= 1951 ; 9= 1953 ; 19= 1954 ; 1= 1955?? ; 15= 1955 ; 4= 1956 ; 1= 1958?? ; 1= 1958? ; 4= 1958 ; 2= 1959? ; 2= 1959 ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 59

Further Information for

DC90

The DC90 in Additive Mixer Circuitry (18.04.2009) Joe Sousa	Clicks: 315 Replies: 3
Thomas Albrecht has translated the 1953 Radio-Mentor article "DC90 in additiver Mischschaltung" from German to English. Thomas based his translation on the text capture by Hans M. Knoll. The English Version is DC90_in_Additive_Mixer_Circuitry.pdf The original German version is DC90 in additiver Mischschaltung_v2.pdf Mr. Knoll first uploaded this article in a thread discussing the use of triode mixers in FM front ends: ukw_empfnangsteile_mit_trioden_als_mischer Thank you all who contributed to this effort. Regards, -Joe More ...

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