Antique radios, Old Time Radios

ECH4

ID = 279

Country:

Netherlands

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

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 ; ECH2_Tungsram

First year

Jan.1940 Tube leaflet collection E.Erb Philips-Archive

First Source (s)

Jan.1940 : -- Original-techn. papers.

Predecessor Tubes

ECH3 ECH2

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	14 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

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

ECH4: g.h.
Gerhard Heigl

Usage in Models

1= 1938? ; 2= 1939?? ; 1= 1939? ; 2= 1939 ; 26= 1940?? ; 12= 1940? ; 45= 1940 ; 3= 1941?? ; 14= 1941? ; 139= 1941 ; 6= 1942?? ; 4= 1942? ; 74= 1942 ; 10= 1943?? ; 2= 1943? ; 58= 1943 ; 4= 1944?? ; 2= 1944? ; 30= 1944 ; 13= 1945?? ; 9= 1945? ; 34= 1945 ; 28= 1946?? ; 11= 1946? ; 66= 1946 ; 23= 1947?? ; 14= 1947? ; 107= 1947 ; 64= 1948?? ; 37= 1948? ; 130= 1948 ; 27= 1949?? ; 12= 1949? ; 146= 1949 ; 32= 1950?? ; 12= 1950? ; 75= 1950 ; 8= 1951?? ; 4= 1951? ; 20= 1951 ; 11= 1952?? ; 3= 1952? ; 6= 1952 ; 3= 1953?? ; 3= 1953 ; 1= 1954 ; 8= 1955?? ; 4= 1955 ; 1= 1957? ; 1= 1958?? ; 1= 1958? ; 1= 9999?? ; 6= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1356

Museum "Philips Historische Producten"

Collection of a member from SK

Collection of Tor Steinnes (N)

Collection of Wouter Brughmans (B)

Collection of Uwe Rössler (D)

Collection of Peter Steffen (CH)

Collection of Tomasz Szczesniak (PL)

Collection of Oskar Elm (D)

Collection of Valery Gromov (RUS)

Collection of Jose Luis Villabona Horreo (E)

Collection of Benedetto Pirani (I)

Collection of Wolfgang Bauer (A)

Collection of Danko Tkalec (HR)

Collection of Marco Lagendijk (NL)

Collection of Jochen Amend (D)

Collection of a member from FIN

Collection of Georges Werts (B)

Collection of Aires Gomes (P)

Collection of Etienne Flemal (B)

Collection of Christian Schaufelberger (CH)

Collection of Aldo Patriarca (CH)

Collection of Karl - Heinz Bossan (D)

Collection of Klaus Neumann (D)

Collection of Sandor Selyem-Tóth (H)

Collection of Jacob Roschy (D)

Collection of René Goebel (D)

Collection of Antonio Bordini (I)

Collection of a member from D

Collection of Carlo La Perna (I)

Collection of Jürgen Küting (D)

Collection of Emilio Ciardiello (I)

Collection of João-Afonso Santos (P)

Collection of Massimo Pedrina (I)

Collection of Alberto Ammendola (I)

Collection of Jürgen Tiedmann (D)

Collection of Heinz Schmidt (D)

Collection of Ottmar Rollmann (D)

Collection of Peter Roggenhofer † 25.4.18 (A)

Collection of Peter Böhm (D)

Collection of Emilio Focosi (I)

Collection of Marcello Astolfi (I)

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