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VT-42A

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ID = 7178
       
Country:
United States of America (USA)
Brand:
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Half-Wave Mercury-Vapor Rectifier   Power-supply 
Identical to VT-42A = 872A

Base Jumbo 4-pin bayonet (1918) (Codex=Bz) Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 5 Volts / If 6.7 Ampere / Direct / Specified voltage AND current AC/DC
Description

Shielded electrode structure, reduced filament current. Split filament, specfications unknown.

 
Dimensions (WHD)
incl. pins / tip
x 217 x 62 mm / x 8.54 x 2.44 inch
Weight 225 g / 7.94 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
Tube Lore (II)   p. 80 &179
Tube Lore (I)

872a_so_1.png VT-42A: ARRL Handbook 1972
Anonymous 10 Collector

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Just Qvigstad

Collection of

 
gen_elec_vt_42a_e921_copy.jpg

VT-42A
 

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