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GRDVII

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ID = 39365
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Full-Wave Vacuum Rectifier   Power-supply 
  Ca. 1925 up to 1945 rare.
Identical to GRDVII
Similar Tubes
Other class quality (otherwise equal):
  1805 ; RGN1064
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1.1 Ampere / Direct / Specified voltage AC/DC
Description

Special Quality type.
GRD stands for "Gemeentelijke Radio Distibutie", translated "Municipal Wired Radio". Used by Dutch PTT.

 
Dimensions (WHD)
incl. pins / tip		 49 x 115 x mm / 1.93 x 4.53 x inch
grdvii_so.png GRDVII
Anonymous 10 Collector

Just Qvigstad
Usage in Models 1= 1938?
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of

Jan Poortman (NL)
Collection of a member from D
Siegfried Droese (D)
Stefan Müller (D)
 
grd_vii_philips_bild1.jpg

GRDVII
 
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