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ID = 19488
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Oscilloscope CRT, picture tube 
Identical to DG9-1
Similar Tubes
Normally replaceable-slightly different:

Base 9-pin (5+4) CRT base F-J
Filament Vf 4 Volts / If 1 Ampere / Half indirect / Specified voltage AC/DC

The DG9-1 is idntical to the DB9-1 except for the screen colour.

Information source - - Manufacturers Literature   1937

sp31_g.gif DG9-1: RTT Schwandt
Günther Stabe † 19.8.20

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Just Qvigstad
DG9-1: own collection
Peter den Boer

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Usage in Models 1= 1940??

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

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