DESCRIPTION:
The Rohde & Schwarz FSH4 is a professional handheld spectrum analyzer developed for engineers and technicians working in telecommunications, broadcasting, public safety communications, utilities, transportation systems, industrial wireless networks, and RF maintenance environments. Covering frequencies from 9 kHz to 3.6 GHz, the instrument delivers comprehensive spectrum analysis capability within a rugged field-ready platform.
Its frequency range makes the FSH4 particularly suitable for land mobile radio systems, TETRA networks, public safety communications, VHF and UHF radio services, GSM, UMTS, LTE networks, industrial wireless systems, broadcast transmitters, telemetry systems, and general RF infrastructure operating below 3.6 GHz.
The analyzer provides excellent sensitivity, high dynamic range, and low phase noise performance for reliable identification of weak signals, unwanted emissions, harmonics, spurious signals, and interference sources. With optional preamplifier functionality enabled, the instrument can detect low-level RF signals in demanding measurement environments.
Designed specifically for field operation, the FSH4 incorporates a rugged splash-proof enclosure, large colour display, dedicated hard keys, USB and LAN connectivity, and battery-powered operation. The intuitive user interface allows engineers to rapidly perform measurements, analyse results, and complete troubleshooting tasks at remote sites and outdoor installations.
The instrument supports spectrum analysis, channel power measurements, occupied bandwidth analysis, adjacent channel power measurements, field strength measurements, transmitter testing, and interference investigations. Optional application packages add cable and antenna analysis, VSWR measurements, distance-to-fault testing, tracking generator functionality, power sensor support, and network analysis capability.
The FSH4 is widely used as a versatile field service instrument capable of replacing multiple RF test instruments while maintaining the measurement quality expected from Rohde & Schwarz equipment.
Keywords: Rohde & Schwarz FSH4, handheld spectrum analyzer, 3.6 GHz RF analyzer, radio communications testing, interference analysis, field spectrum monitoring
Rohde & Schwarz FSH Series Models
| Model | Frequency Range | Instrument Type | Availability |
|---|---|---|---|
| FSH4 | 9 kHz to 3.6 GHz | Spectrum Analyzer | Enquiry Only |
| FSH8 | 9 kHz to 8 GHz | Spectrum Analyzer | Enquiry Only |
| FSH13 | 9 kHz to 13.6 GHz | Spectrum Analyzer | Enquiry Only |
| FSH20 | 9 kHz to 20 GHz | Spectrum Analyzer | Enquiry Only |
Technical Specifications
| Specification | FSH4 |
|---|---|
| Frequency Range | 9 kHz to 3.6 GHz |
| Resolution Bandwidth | 1 Hz to 300 kHz |
| DANL @ 1 GHz | Approximately -163 dBm with preamplifier |
| Phase Noise | Typically -127 dBc (1 Hz), 500 MHz carrier, 1 MHz offset |
| Amplitude Accuracy | Better than ±0.5 dB |
| Display | 6.5-inch Colour LCD |
| Interfaces | USB Host, USB Device, LAN |
| Battery Operation | Approximately 4.5 Hours |
| Weight | Approximately 3 kg |
| Housing | Rugged Splash-Proof Design |
| RF Connector | N Female |
| Instrument Type | Handheld Spectrum Analyzer |
Key Features
- Frequency coverage from 9 kHz to 3.6 GHz
- Portable handheld spectrum analyzer
- Excellent sensitivity for weak signal detection
- High dynamic range performance
- Low phase noise characteristics
- Rugged splash-proof housing
- USB and LAN connectivity
- Long battery operation
- Suitable for field and laboratory use
- Spectrum monitoring capability
- Interference hunting functionality
- Channel power measurements
- Occupied bandwidth analysis
- Adjacent channel power measurements
- Transmitter testing support
- Optional cable and antenna measurements
- Optional VSWR and distance-to-fault analysis
- Optional tracking generator capability
- Optional network analysis functions
Usage Suitability
The FSH4 is ideally suited for land mobile radio testing, TETRA network maintenance, public safety communications systems, utility communications infrastructure, industrial wireless networks, RF interference investigations, spectrum monitoring, broadcast engineering, antenna system verification, transmitter testing, and general-purpose RF troubleshooting up to 3.6 GHz.
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