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EF2S

Information - Help 
ID = 38654
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to EF2S
Similar Tubes
Other characteristic (electr. data):
  EF2

Base Europe side contact P8A (Au P, 8SC) Top contact with a cap.
Filament Vf 6.3 Volts / If 0.2 Ampere / Indirect / Parallel, (AC/DC)
Description

Mentioned in AVO test data as making 10% higher anode current and 20% lower Gm than EF2.

 
Information source - - Manufacturers Literature   
 
ef2s_so.png
EF2S: rtt
Michael Schlör

 
ef2_ef2s_data.png
EF2S: own collection
Peter den Boer


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