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872

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ID = 6877
       
Country:
United States of America (USA)
Brand:
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  High Voltage Half-Wave Mercury-Vapor Rec   Power-supply 
Identical to 872 = GL872 = 572 = UV872 = E772 = WL-422 = SE-3070 = 572_Arcturus
Similar Tubes
Normally replaceable-slightly different:
  38172 ; SE-3079 ; VT-42
Other class quality (otherwise equal):
  CV642
Other characteristic (electr. data):
  PR872
Successor Tubes 872A  

Base Jumbo 4-pin bayonet (1918) (Codex=Bz) Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 5 Volts / If 10 Ampere / Direct
Description

T-18 bulb with cap, jumbo 4-pin base. Early version, number assigned in 1929, had simple unshielded elements. 7.5KV PIV, 1.25A average.

 
Dimensions (WHD)
incl. pins / tip
x 217 x 58 mm / x 8.54 x 2.28 inch
Weight 225 g / 7.94 oz
Information source Tube Lore (II)   p. 80
Tube Lore (I)   
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49

4at_10.png 872
Emilio Ciardiello

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Just Qvigstad
872.png
872: RCA de forest amateur 1934
Miguel Angel Trujillo-Rodriguez

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Usage in Models 1= 1950 ; 1= 1956

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2

Collection of

 
uv_872.jpg

872
 

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