Rohde & Schwarz FSH 18

The Rohde & Schwarz FSH 18 Handheld Spectrum Analyzer Kit is a high-performance, portable solution for RF engineers, technicians, and field professionals who need accurate spectrum analysis in challenging environments. Covering a wide frequency range, the FSH 18 allows users to measure, monitor, and troubleshoot RF signals with precision, whether in the lab, on-site, or in the field.

Designed for ease of use, the FSH 18 features a bright, high-resolution color display and intuitive controls, providing clear visualization of signals and spectrum data. Its rugged, lightweight design ensures durability during transport and in tough field conditions, making it ideal for mobile testing scenarios.

The analyzer supports a broad array of measurements, including channel power, occupied bandwidth, spurious emissions, and frequency response. With high sensitivity and fast sweep speeds, users can perform both routine and complex RF assessments efficiently. Additional capabilities include demodulation support for common communication standards, flexible connectivity for remote operation, and options for data logging or integration with other Rohde & Schwarz instruments.

Ideal for applications in telecommunications, broadcasting, defense, and industrial electronics, the FSH 18 ensures precise, reliable measurements while helping professionals maintain optimal system performance and comply with regulatory standards. Whether used for installation, troubleshooting, or maintenance, this handheld analyzer delivers the performance, portability, and accuracy that RF specialists demand.

Key Specifications

Frequency Range

10 MHz – 18 GHz (standard FSH 18 model) for wideband RF analysis from mid-range to microwave signals.

Resolution & Bandwidth

Resolution Bandwidth (RBW): approx. 100 Hz – 1 MHz.
Video Bandwidth (VBW): 10 Hz – 1 MHz.

Noise Level (DANL)

Typical Displayed Average Noise Level: –128 dBm (for small RBW at 3 GHz–6 GHz).

Accuracy & Performance

Level accuracy: approx. ±1.5 dB in the 20 MHz – 6 GHz range.
Third-order intercept (TOI): approx. +7 dBm typical.
Detectors: sample, max/min peak, auto peak, RMS.

Display

Color display, approx. 6.5″ – intuitive spectrum visualization.

Power & Portability

Battery operation: ~3 – 4.5 hours depending on field usage.
Lightweight unit: approx. 2.5 – 3.4 kg depending on configuration.

Interface & Connectivity

USB, LAN (some models with optional GPIB).
Optional bias tee / VSWR bridge for network/antenna measurements.

Measurement Functions

Channel power, adjacent channel power, spurious emissions, pulsed signal measurement.
Optional analysis for commercial signals such as GSM, WCDMA, LTE.
Internal tracking generator for cable/antenna testing (on some configurations).

Physical & Build

Compact and rugged design, ideal for field measurements.

Rohde & Schwarz FSH 18

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