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ID = 74145
Brand: Tungsram; Budapest (see also British T.)
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode-Heptode   Frequency converter   Controlling (mu) 
Identical to CCH2_Tungsram
Similar Tubes
Heater different:
Heater and shape different:

Base Europe side contact P8A (Au P, 8SC) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 20 Volts / If 0.2 Ampere / Indirect / Series, AC/DC

Similar to the Tungsram ECH2 there is also the likelihood, that the system of the UCH4 has also used here, since the operating data of the CCH2 differ only insignificantly from those of the UCH4.

The heater current may be adjusted to 0.2A by means of a bypass resistor, very likely by a PTC resistor, as the cold resistance is only 5 ohms.

The big bulb was probably chosen to achieve the height of the original Philips CCH2, but also perhaps to accommodate the heater bypass resistor.

Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
50 x 122 x mm / 1.97 x 4.80 x inch
CCH2_Tungsram: Photo of tube from my collection - TS
Tomasz Szczesniak

CCH2_Tungsram: Telefunken Werkstattbuch
Wolfgang Bauer

CCH2_Tungsram: Funkschau Taschenbuch 1948
Michael Schlör

from Just Qvigstad

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