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

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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Tube-number record

F 523/1,64

0 archive entries

F 523/1,64 is a tube type in the TubeDatabase archive (class: Phototube). Recorded specifications: construction Other / special. The archive does not yet hold a photographed example of this type.

ClassPhototube

Construction

Primary TypeOther / special

Filament / Heater

Absolute Maximum Ratings

Audio Performance

Key Features
  • Prüfschein (Test Certificate)

Application Notes

Sensitivity measured in µA/lm at a color temperature of 2850 K and a luminous flux of 0.01 lm.

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