radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

7885

Information - Help 
ID = 32464
       
Country:
Italy
Brand: Marconi Italiana (Marconifono), Officine / Ufficio Marconi; Genova, Roma
Tube type:  Transmitter Triode, liquid-cooling   Power/Output 
Identical to 7885 = BW199

Filament Vf 17.5 Volts / If 110 Ampere / Direct
Description External anode power triode, capable of operation up to 50MHz. Anode is water cooled and forced air cooling is required on heater and grid rods: the maximum power dissipation is 12KW. Direct heating cathode of pure tungsten. Transconductance 16.5mA/V at Va=5KV, Ia=2A. The tube can be used as RF, class C amplifier or oscillator. 
Weight 3700 g / 130.51 oz
Information source - - Manufacturers Literature   
- - -   
- - -
- - -

7885_bw199_1_1.png
7885: Manufacturer's Literature
Emilio Ciardiello

More ...
 

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  

Data Compliance More Information