Keyword Analysis & Research: vt25

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Frequently Asked Questions

What is a vt25a?

Even more confusing is, the part number VT25 was used for Barium Oxide tubes by WE, and for Thoriated Tungsten by the others. Confusion comes also from the Catalog of Navy Materialcalling the VT25A a "10 Special".

Does the VT-25 have a ceramic base?

Usual VT-25 have thoriated tungsten filaments. Only Raytheon (4 pillar & box plated) & WE VT-25 have oxide-coated filaments. Moreover Western Electric writes here, VT25 if used in their amplifiers MUST have a ceramic base.

What type of filament is used in VT-25?

Usual VT-25 have thoriated tungsten filament. Only Raytheon (4 pillar & box plated) & WE VT-25 have oxide-coated filament. The first VT-25 with oxide-coated filament was employed by SCR-183.

What is Western Electric VT25?

The Western Electric VT25 is a Barium Oxide coated tube. This particular tube is a special situation, and it helps to understand better what happened. There are fragments of informatiom found in the Western Electric Service manual for their airplane transmitters.


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