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7880

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ID = 32457
       
Country:
Italy
Brand: Marconi Italiana (Marconifono), Officine / Ufficio Marconi; Genova, Roma
Tube type:  Transmitting Tube, Pentode, air cooled 
Identical to 7880 = F400

Base Top contact with a cap.
Filament Vf 12 Volts / If 8.5 Ampere / Direct
Description Transmitting beam tetrode; 400W free air plate dissipation. Thoriated tungsten heater. 
Weight 570 g / 20.11 oz
Information source - - Manufacturers Literature   

7880_f400_pin_1.png 7880: Manufacturer's Literature
Emilio Ciardiello

7880_f400_1_1.png
7880: Manufacturer's Literature
Emilio Ciardiello

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