F4185

Broadband 8–14 GHz traveling-wave amplifier for transportable and airborne equipment, providing at least 4 watts output and 40 dB gain.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 480 mA

Description

Broadband TWT amplifier, 8–14 GHz, for transportable and airborne equipment; conduction/natural-convection cooled.

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: 6.3 V
Nominal heater current: 480 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.

Specialized microwave-device ratings are preserved densely in TUBE_SECTION_PARAMETER because the locked promoted columns do not directly represent beam/helix/collector/magnetron pulse ratings.

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

1972 Thomson CSF

Published operating points and test conditions from this source.

SECTION 1

TravelingWave

Characteristic

Frequency Range
8 to 14 GHz
Heater Current
300 mA to 600 mA
Output Power Minimum
4 W
Gain Minimum
40 dB
Helix Voltage
2.4 to 2.8 kV
Helix Current Maximum
2 mA
Anode Voltage
0.5 to 1 kV
Collector Voltage
1.2 to 1.6 kV

Other

Anode Current Maximum
1 mA
Cathode Current Maximum
25 mA
Warm-up Time Minimum
3 min
Load VSWR Maximum
3 ratio
Typical Frequency
11 GHz
Typical Output Power
5.2 W
Typical Gain
45 dB