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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

HL210

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BrandMarconi
ClassMedium Magnification Triode

Construction

Primary TypeTriode
EnvelopeSmall bulb

Filament / Heater

Absolute Maximum Ratings

Plate Voltage150 V

Audio Performance

Key Features
  • Medium Magnification
  • Small bulb for portable sets
  • High efficiency

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
General Purpose / Amplifier100 V8702300020—

Application Notes

Particularly recommended for portable sets in which space is limited. Suitable for grid leak detector, anode bend detector, L.F. amplifier, and H.F. amplifier.

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