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ID = 20502
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Double Beam Power Tube   UHF 
  Ca. 1925 up to 1945 rare.
Identical to QQE04/20
Similar Tubes
Normally replaceable-slightly different:
  832A ; P2-12 ; QQV04-15

Base Septar (1+6 pins) 2 Top contacts.
Was used by Transmittertube (Radio)
Filament Vf 12.6 Volts / If 0.8 Ampere / Indirect / Specified voltage AC/DC

Heizfaden-Mittelanschluss, daher auch Betrieb mit 6.3 V und 1.6 A

Dimensions (WHD)
incl. pins / tip
x 92 x 61 mm / x 3.62 x 2.40 inch
Tube prices 2 Tube prices (visible for members only)
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   section 474, p. 1033
- - Manufacturers Literature   8-1940
Babani, International Radio Tube Encyclopaedia

sp9a_g.gif QQE04/20: RTT Schwandt
Günther Stabe † 19.8.20

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QQE04/20: own collection
Peter den Boer

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Usage in Models 1= 1952??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of



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