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ECH4A Info
Country:  Italy      Brand:  Philips Italy; Milano (MI) 
  Tube type:  Triode-Heptode   Frequency converter 
  late but very rare
Tube ID = 19469
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Identical to ECH4A
Similar Tubes ECH4 (other base)   ECH4G (Multiple differences or of other kind)  

Base Octal (Int.Octal, IO) K8A, USA 1935
Was used by Radio/TV-reception etc.
Filament -: Indirect / -: Parallel, (AC/DC) /
Description ECH4 mit Oktal-Sockel, Vergleich Belegung zur ECH4K muss noch gemacht werden,
Unterschied zu ECH4G und ECH34 noch unklar, möglicherweise identisch. 
Text in other languages (may differ)

philips_ech4a_1.jpg
M.C.
Alessandro De Poi

 
6j9sgmbasdiag2.png
schematic diagram
Jacob Roschy

 
Usage in Models   1= 1946? ; 1= 1946 ;
Number of Models with this tube   2
No further Information for

ECH4A    

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