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MT7B

Information - Help 
ID = 19703
       
Country:
Great Britain (UK)
Brand: Osram-Valves GB (not MO-Valves)
Developer: Marconi's Wireless Telegraph Co. Ltd. 
Tube type:  Transmitting Triode, air cooled 
Identical to MT7B
First year 1922 ?? -- Collector info (Sammler)

Base Wires Wires only
Was used by Transmittertube (Radio)
Filament Vf 15 Volts / If 10 Ampere / Direct
Description

Anode volts 10 kv. This tube which was made with wire leads. Special adaptors were also available with this tube for the wires to be connected to screw terminals. The photo shows these adaptors.
Pd: 1000 W, Gain: 40, Ri: 30'000

 
Dimensions (WHD)
incl. pins / tip
180 x 450 x mm / 7.09 x 17.72 x inch
Literature The Saga of Marconi Osram Valve   Page 124
- - Data from my own collection   
 
osram_mt7b.jpg
MT7B: Fin Stewart collection
Fin Stewart

 


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