The Rohde & Schwarz FSH18 is a handheld spectrum analyzer covering 10 MHz to 18 GHz, engineered for field installation, maintenance, and laboratory RF signal analysis. It delivers fast, accurate measurements across cellular base station deployment, RF cable diagnostics, microwave link testing, and general signal characterization. The instrument combines portable design—2.5 kg (5.5 lbs)—with a transflective color LC display and integrated adjustable stand for flexible fieldwork positioning.
Technical Specifications
• Frequency Range: 10 MHz to 18 GHz
• Displayed Average Noise Level (DANL): Typically −128 dBm at 100 Hz RBW, 3 GHz to 6 GHz
• Level Accuracy: Typically 1.5 dB (20 MHz to 6 GHz); typically <2.5 dB (to 16 GHz); typically <3 dB (to 18 GHz)
• Resolution Bandwidth: 100 Hz to 1 MHz in 1 and 3 steps
• Video Bandwidth: 10 Hz to 1 MHz
• Reference Level Range: −80 dBm to +20 dBm
• Third Order Intercept (TOI): Typically +7 dBm
• SSB Phase Noise: Typically −90 dBc/Hz at 1 Hz offset; typically <−100 dBc/Hz at 100 kHz offset
• Battery Operating Time: Up to 3 hours
• Weight: Approximately 2.5 kg (5.5 lbs)
– Key Features
• Adjustable pre-amplifier included standard for weak-signal measurement
• Detectors: Sample, Max/Min Peak, Auto Peak, RMS (Average and quasi-peak via R&S FSH-K3 option)
• Transflective LC color display with optimized stand
• Field-deployable design
– Typical Applications
• Spectrum analysis and signal characterization
• TDMA power measurement with GSM and EDGE presets
• Field strength measurement in dBµV/m with antenna gain correction
• Channel power measurement for 3GPP WCDMA, cdmaOne, and cdma2000 1x standards
• Cable analysis via Distance-to-Fault when equipped with tracking generator
– Compatibility & Integration
Receiver mode and EMC prequalification capabilities are available through the R&S FSH-K3 option, supporting frequency-specific and scan-mode operation using channel tables generated by R&S FSH View software.

















