The Rohde & Schwarz FSH4 is a handheld spectrum analyzer covering 100 kHz to 3.6 GHz, engineered for field signal analysis and interference detection. This multifunction instrument operates as a spectrum analyzer, power meter, cable and antenna tester, and two-port vector network analyzer depending on installed options. An integrated preamplifier delivers sensitivity to -161 dBm (1 Hz), while phase noise performance reaches -127 dBc/Hz at 500 MHz with 1 MHz offset.
The splash-proof housing withstands demanding field environments. Resolution bandwidth spans 1 Hz to 3 MHz. Amplitude accuracy measures less than 0.5 dB with typical measurement uncertainty under 1 dB.
Maximum rated input is 50 V DC or 20 dBm CW RF power with RF attenuation ≥10 dB. The FSH4 executes channel power, adjacent channel power, and spectrum emission mask (SEM) measurements. Modulation analysis covers AM and FM; signal analysis includes LTE, NB-IoT, TD-SCDMA, WCDMA, CDMA, and GSM protocols with 20 MHz demodulation bandwidth for LTE signals.
Directional power measurements operate up to 4 GHz. EMI precompliance testing and field strength measurement capabilities are built in. Tracking generator and VSWR bridge functionality are available on select models.
A replaceable Li-ion battery supplies up to 4.5 hours of runtime. USB (Host/Device) and LAN (RJ-45) interfaces enable remote control, firmware updates, and data transfer to external systems.
Specifications
Parameter
Value
Frequency Range
9 kHz to 3.6 GHz (.04/.14 models)
100 kHz to 3.6 GHz (.24/.28 models) | Power Range (dBm)
'-141 dBm to -161 dBm (sensitivity range depending on preamplifier configuration)
Rohde & Schwarz FSH4 — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Rohde & Schwarz FSH4.
All calibrations are performed to NIST-traceable standards and ship with a certificate. Turnaround is typically 1–3 business days after receipt.
This Rohde & Schwarz FSH4 is listed at $10,880. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Rohde & Schwarz FSH4 calibration cost
NIST-traceable calibration for the Rohde & Schwarz FSH4 is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Turnaround is 1 to 3 business days after receipt. See full calibration details →
