1W80

Toshiba 1W80 high-power UHF traveling-wave tube for television broadcast and communications transmission, operating from 590 to 770 MHz with approximately 2 kW saturated RF output at 650 MHz.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6 V / 12.5 A

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: 6 V
Nominal heater current: 12.5 A
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.

Toshiba 1W80 traveling-wave amplifier, 590–770 MHz, periodic permanent-magnet focusing and forced-air cooling. Maximum collector voltage 4–7 kV DC, collector current 2.5 A DC, collector dissipation 14 kW; helix voltage 4–7 kV DC, helix current 75 mA DC, helix dissipation 400 W; accelerating electrode voltage 7 kV DC, current 10 mA DC; collector max 250 °C. Typical at 650 MHz: collector 5.6 kV/2.0 A, helix 5.6 kV/15 mA, accelerating electrode 4.3 kV/1.0 mA, RF drive 0.63 W, RF output 1.26 kW, gain 33 dB, small-signal gain 35 dB, saturated output 2.0 kW, airflow 17 m³/min. Heater 6.0 V/12.5 A DC, warm-up 300 s. No conventional plate/screen voltage scalar promoted because the electrode meanings differ.

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.

No source-specific operating conditions are recorded.