Antique radios, Old Time Radios

ECH4

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

Tube ID = 279

previous | next

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 year	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)
Filament	Vf 6.3 Volts / If: 0.35 Ampere / -: Indirect / -: Parallel, (AC/DC) /
Tube prices	2 Tube prices (visible for members only)
Literature	Taschenbuch zum Röhren-Codex 1948/49


	ECH4: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse Karel De Reus †

ECH4: Collection JR
Jacob Roschy

Variants

ECH4: RTT 1974 (Franzis) 13. Auflage
Martin Renz

ECH4: g.h.
Gerhard Heigl

Usage in Models

1= 1937? ; 1= 1938 ; 1= 1939?? ; 2= 1939 ; 19= 1940?? ; 11= 1940? ; 44= 1940 ; 1= 1941?? ; 9= 1941? ; 134= 1941 ; 6= 1942?? ; 2= 1942? ; 71= 1942 ; 9= 1943?? ; 2= 1943? ; 56= 1943 ; 2= 1944?? ; 2= 1944? ; 28= 1944 ; 12= 1945?? ; 7= 1945? ; 31= 1945 ; 22= 1946?? ; 7= 1946? ; 61= 1946 ; 21= 1947?? ; 9= 1947? ; 97= 1947 ; 54= 1948?? ; 22= 1948? ; 129= 1948 ; 21= 1949?? ; 12= 1949? ; 136= 1949 ; 29= 1950?? ; 9= 1950? ; 64= 1950 ; 8= 1951?? ; 17= 1951 ; 9= 1952?? ; 1= 1952? ; 4= 1952 ; 2= 1953?? ; 3= 1953 ; 1= 1954?? ; 1= 1954 ; 3= 1955?? ; 3= 1955 ; 1= 1957? ; 1= 1958??

Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 1198

Variants

Jacob Roschy

ECH4*gold

ECH4 with gold-colored bulb, although the ECH4 belongs to the red series.

09.Feb.2012 Jacob Roschy

ECH4*tubular

ECH4 with tubular (straight) bulb

09.Feb.2012 Jacob Roschy

My collection
Jose Antonio Gonzalez-Ruiz

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]