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Tube Database (7,341 tube types · 1,270 archive entries)

Other (3,257 tube types), Pre (2,314 tube types), Power (1,030 tube types), Rectifier (740 tube types)
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Tube-number record

R85A

0 archive entries

BrandVisitron
ClassPhototube

Construction

Primary TypeOther / special
EnvelopeGlass
SectionsSingle

Filament / Heater

Absolute Maximum Ratings

Plate Voltage90 V

Audio Performance

Key Features
  • Non-directional
  • 360° pickup
  • Gas amplification
  • Increased sensitivity

Application Notes

Ideal for multi-directional applications such as target games, burglar alarms, and fire alarms.

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