Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 2490
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode-Heptode   Frequency converter   Controlling (mu) 
Identical to ECH2
Similar Tubes
Heater different:
Heater and shape different:
Other base and other heater:
First year 1938 -- Collector info (Sammler) HBV
First Source (s)
05.Oct.1938 : Philips Bulletin
26.May.1938 : Wireless Magazine
Predecessor Tubes EK2  
Successor Tubes 1939   ECH3   ECH4  

Base Europe side contact P8A (Au P, 8SC) (Codex=Sao) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.95 Ampere / Indirect / Specified voltage AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   

ech2_sock.png ECH2: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

More ...

Just Qvigstad
ECH2: Memento Tungsram Vol. 4
Jacob Roschy

More ...
Usage in Models 1= 1938? ; 7= 1938 ; 17= 1939 ; 7= 1940

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):32

Collection of



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]

Data Compliance More Information