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7886

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ID = 32466
       
Country:
Italy
Brand: Marconi Italiana (Marconifono), Officine / Ufficio Marconi; Genova, Roma
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to 7886 = DET3_ITA

Base Sidecontact and top contact.
Filament Vf 15 Volts / If 4 Ampere / Direct
Description Power triode, convection cooled, capable of 250W anode dissipation. Four pin Jumbo special base, Marconi ZC22. Direct heating cathode, thoriated tungsten. As telegraphy or telephony class C amplifier or oscillator the tube can operate up to 3MHz. 
Weight 490 g / 17.28 oz
Information source - - Manufacturers Literature   
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7886_det3_pin_1.png 7886: Manufacturer's Literature
Emilio Ciardiello

7886_det3_1_1.png
7886: Manufacturer's Literature
Emilio Ciardiello

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