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

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Tube-number record

CW TRAVELING WAVE TUBE

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BrandNippon Electric Company Limited
ClassMicrowave Tube
BaseSpecial / none
Filament6.3 V @ 700 mA

Construction

Primary TypeOther / special
EnvelopeGlass and Metal
Base MaterialRadiator for cooling
SectionsSingle

Filament / Heater

MaterialOxide Coated, Unipotential
Warm-up Time90s
Heater NotesUni-potential cathode

Absolute Maximum Ratings

Plate Voltage2000 V
Plate Dissipation63 W
Grid 2 Voltage3000 V
Grid 1 Voltage-15 V
Cathode Current35 mA

Audio Performance

Power Output15.6 W
Key Features
  • PPM Focused
  • Field Replaceable
  • Depressed Collector Operation
  • Conduction and Natural Convection Cooling

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
3.7 GHz operation1700 V———35 mA
4.0 GHz operation1700 V———35 mA
4.2 GHz operation1700 V———35 mA

Application Notes

The LD-597A is designed for CW operation in the 3.6-4.2 GHz band. It features a depressed collector to improve efficiency. Forced air cooling is required if ambient exceeds 55C.

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