Antique radios, Old Time Radios

ECH4

Country:	Netherlands	Brand:	Philips; - Eindhoven; Netherlands
		Developer:	Philips; - Eindhoven; Netherlands
		Tube type:	Triode-Heptode Frequency converter Controlling (mu)

Tube ID = 279


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Identical to	ECH4
Similar Tubes	Other shape (e.g. bulb type): ECH4N Heater different: ACH1n Other base: ECH21; ECH34; ECH4A; ECH4G Multiple differences or of other kind: E1R
First Series	Jan.1940 Tube leaflet collection E.Erb Philips-Archive
First Source (s)	Jan.1940 : -- Original-techn. papers.
Predecessor Tubes	ECH3
Successor Tubes	1941 ECH21 ECH41

Base	Europe side contact base P (P8A) (Codex=Sak)
Was used by	Radio/TV-reception etc.
Filament	Vf 6.3 Volts / If: 0.35 Ampere / -: Indirect / -: Parallel, (AC/DC) /
Tube prices	0 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

Collection JR
Jacob Roschy

RTT 1974 (Franzis) 13. Auflage
Martin Renz

g.h.
Gerhard Heigl

Usage in Models (calculation each 25th of the month)

1= 1938 ; 2= 1939?? ; 2= 1939 ; 12= 1940?? ; 9= 1940? ; 44= 1940 ; 1= 1941?? ; 9= 1941? ; 127= 1941 ; 7= 1942?? ; 2= 1942? ; 71= 1942 ; 8= 1943?? ; 2= 1943? ; 54= 1943 ; 3= 1944?? ; 2= 1944? ; 27= 1944 ; 11= 1945?? ; 4= 1945? ; 30= 1945 ; 18= 1946?? ; 3= 1946? ; 47= 1946 ; 16= 1947?? ; 9= 1947? ; 78= 1947 ; 38= 1948?? ; 12= 1948? ; 120= 1948 ; 15= 1949?? ; 6= 1949? ; 121= 1949 ; 20= 1950?? ; 4= 1950? ; 59= 1950 ;

Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 1032

No further Information for

ECH4

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