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ID = 34531
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Bell Labs; Murray Hill, NJ. 
Tube type:  Screen-grid Tetrode 
Identical to 715B = CV2655
Similar Tubes
Normally replaceable-slightly different:
Predecessor Tubes 715A  
Successor Tubes 715C   5D21  

Base Top contact with a cap.
Was used by Radar
Filament Vf 26.5 Volts / If 2.1 Ampere / Half indirect

Pulse amplifier tetrode for airborne radar modulators: 15KV, 15A peak. Quad in-line cathode inside a single electrode structure; gold-plated grids, Mo-Zr plate. Similar to 715A, with larger grid radiating fins and improved ratings. Heaters designed to operate directly from the aircraft storage battery, between 22 and 28.5 volts.
4-pin base, jumbo-like, from a notched ceramic wafer.
Made by Raytheon, RCA, STC, WE.

Dimensions (WHD)
incl. pins / tip
64 x 150 x mm / 2.52 x 5.91 x inch
Information source Tube Lore (I)   
-- Original-techn. papers.   
715B: Eigene Sammlung
Aldo Patriarca

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715B: Manufacturer's Literature
Emilio Ciardiello

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715B: STC Tube Databook 1958
Aldo Patriarca

More ...

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