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6144

Coaxial tungsten-filament noise diode designed as a calibrated noise source for HF and UHF measurements, with broadband operation extending to approximately 3 GHz.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: -

Description

This tube is designed for use as a noise source in HF and UHF measurements. It is constructed to match the characteristic impedance of a 50-ohm coaxial line. The noise output is a direct function of anode current and is controlled by varying the applied filament voltage. The coaxial construction gives wide band operation thus per- mitting use with any type of circuit — tuned or untuned. Correct matching of impedances and a termination is required to keep the VSWR aof the overall circuit to a minimum. TYPICAL STATIC CHARACTERISTICS R AT I N G s TYPICAko?s.‘;{A-I[.)l\gDé:H'lr\YRpléClﬁ:ﬁISTlcs Anode voltage........ ... ... 30?m;o|f§ D-C 120 || FILAMENT CURRENT= 2.5 AMP X. [ o ! Anode current.. ... 100 ma. D-C {max.) 100 ANODE CURRENT— MILLIAMPERES Filament voltage ... 3.2 volts A-C or D-C o Filament current.........__ ... .. .. 2.5 amp. Anode dissipation.. ... 30 watts (max.) 60 Characteristic coaxial impedance 50 ohms 0 Frequency range ... 3000 megacycles {max.) Dynamic impedance..............._..... 16,000 ohms {min.) s - ‘r i || 8] 50 100 150 200 250 300 ANODE VOLTAGE —VOLTS OPERATING CHARACTERISTICS Since the tube operates under temperature limited can be accomplished by heat c

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: -
Nominal heater current: 2.5 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

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Published characteristics and ratings promoted where clearly recoverable from source.

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.