Keysight 346A/004: Unleash Precision Noise Generation from 10 MHz to 18 GHz

Keysight 346A/004 Noise Source (10 MHz to 18 GHz, Type-N Female) – Precision Broadband Calibration Tool.

The Keysight 346A/004 Noise Source is a high-performance, broadband RF test accessory that spans a frequency range of 10 MHz to 18 GHz. Designed with a Type-N (female) connector, it delivers nominal Excess Noise Ratio (ENR) of 6 dB, making it an essential tool for engineers working with sensitive RF components.

Its low Voltage Standing Wave Ratio (VSWR) of <1.3:1 ensures minimal signal reflection, reducing measurement uncertainty. The 346A/004 is individually calibrated at specific frequency points, ensuring precision when used in noise figure testing setups or during calibration of RF receivers and amplifiers.

If you’re exploring more advanced RF tools, check out other models in our RF Detectors & Noise Sources category for broader applications.

Key Features

• Frequency Range: 10 MHz to 18 GHz

• Connector Type: Type-N (female) output / BNC (f) input bias

• Nominal ENR: 6 dB

• VSWR: <1.3:1 for low measurement uncertainty

• ENR Calibration: Individually calibrated ENR values at specific frequencies

• Minimal Reflection Change: <0.01 from ON to OFF state

• Ideal for: GaAsFETs, UHF amplifiers, and input-impedance-sensitive devices

Why Choose the Keysight 346A/004?

Unlike narrowband noise sources, the 346A/004 provides broadband coverage, eliminating the need to switch between multiple devices for different frequency bands. This enhances workflow efficiency and ensures accurate, repeatable results.

The low SWR and stable ENR values make it particularly valuable for precision RF applications. Engineers can count on it for low-uncertainty noise figure measurements, especially when accuracy, resolution, and repeatability are critical—as explained in our Measurement Tools Guide.

What’s Included

• Keysight 346A/004 Noise Source

• Calibration certificate with ENR values

• Protective packaging

• Manufacturer documentation

Technical Specifications

Applications

• Noise figure testing for RF receivers

• Calibration of spectrum analyzers

• Testing UHF amplifiers and GaAsFET-based designs

• General-purpose RF laboratory and field testing

For other RF calibration and test solutions, explore our full RF Test Accessories category.