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Specialized - Traveling Wave ·TravelingWave

UV40

Russian traveling-wave tube; Uhf amplification in first stage.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
2.5 V / 750 mA

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
2.5 V
Nominal heater current
750 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

TravelingWave

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Application: Uhf amplification in first stage. Cathode type: Oxide, indirect heating; Output type: Coaxial; Envelope: Glass with signal conditioning unit in metal envelope; Mass: 380g; Cooling method: Natural; Frequency range: 16 cm; Frequency range Minimum: 12.1 cm; Frequency range Maximum: 19.8 cm; Gain: 25dB; Filament voltage, v: 2.5; Filament voltage, v Minimum: 2; Filament voltage, v Maximum: 3; Filament current, a: 0.75; Filament current, a Minimum: 0.5; Filament current, a Maximum: 1; First anode voltage, v: 65; First anode voltage, v Minimum: 30; First anode voltage, v Maximum: 100; Slow-wave circuit voltage, v: 385; Slow-wave circuit voltage, v Minimum: 320; Slow-wave circuit voltage, v Maximum: 450; Control electrode voltage, v: 20; Control electrode voltage, v Minimum: 10; Control electrode voltage, v Maximum: 30; Collector voltage, v: 500; External loading agreement coefficient: 2.8; External loading agreement coefficient Minimum: 2.5; External loading agreement coefficient Maximum: 3; Noise coefficient: 10dB

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

2026 Russian Traveling Wave

Published operating points and test conditions from this source.

SECTION 1

TravelingWave

Other

  • Wavelength

    12.1 to 19.8 cm

    Wavelength, not frequency

  • SlowWaveStructureVoltage

    320 to 450 V

    slow-wave circuit voltage, v

  • FirstAnodeVoltage

    30 to 100 V

    first anode voltage, v

  • Gain

    25 dB

    gain