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ID = 46496
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Developer: Mullard Radio Valve Co. Ltd.;  
Tube type:  Triode, vacuum   Power/Output 
Identical to M7B

Base Wires Wires only.
Filament Vf 16.5 Volts / If 9.5 Ampere / Direct / Specified voltage AC/DC
Description "This valve is specilly designed for use as an output valve in Public Address Amplifiers of the largest type such as are employed in the open air at football grounds, and for similar purposes where an undistorted output of about 100 Watts is required. It is also suitable for use as a modulator in choke control telphony transmitters." Mullard.

Pa <400W, Va < 3000; Ra 3100 ohms, 2.3mA/V


Information source Experimental Wireless & Wireless Engineer   Mullard advertisement January 1932



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