High Dynamic Range Spectrum Analyzer 43 GHz Rohde & Schwarz FSU43

The pre-owned Rohde & Schwarz FSU43 delivers laboratory-class spectrum analysis from 20 Hz up to 43 GHz, eliminating the need for external harmonic mixers when characterising Ku- and Ka-band devices .

Its 1 Hz–50 MHz RBW suite and wide +25 dBm TOI give more than 110 dB of usable dynamic range, while a –123 dBc/Hz phase-noise floor and –158 dBm sensitivity expose low-level spurs and keep stringent EVM/ACLR limits intact .

Fresh calibration, current firmware and ready-to-ship stock translate to immediate deployment and significant capital savings over new microwave analyzers—without compromising measurement precision, remote-control automation or long-term serviceability.

Contact Us for a Fast Quote

Interested in a Rohde & Schwarz FSU43 or a similar model?

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Looking for other models? Our inventory changes daily—ask for the latest list of spectrum analyzers and RF equipment.

Why Choose TESTRO?

1. Laboratory-Verified Performance

   Every unit ships with an ISO/IEC 17025 calibration certificate bearing the TESTRO Certified seal, so you know the specifications are not just claimed—they’re proven.

2. Total Transparency

   High-resolution teardown photos and a live video test session let you inspect seals, modules, and real-time performance metrics before you pay.

3. Real Warranty, Real People

   One-year machine warranty, with our engineering team standing by on business days to provide remote assistance for any software or hardware issues.

4. Global Delivery, Built-In Protection

   DHL lanes—arriving at most destinations in just 3–5 days.

5. Flexible, Modern Payments

   Choose traditional T/T or wire transfer, credit card.

6. Open-Door Assurance

   Visit our Shenzhen facility, walk the refurbishment line, and see your equipment on the bench before it leaves our dock.

Founded in 2017 and headquartered in Shenzhen, TESTRO Electronics LLC focuses on the secondary sale and flexible rental of high-end electronic test instruments. The team counts 30 employees and operates a 1,500 m² warehouse and inspection center in Qianhai, Shenzhen.

Industry Background & Resource Sourcing

Over the past two decades, rapid advances in China’s radio-frequency sector have shortened production-line refresh cycles to roughly 3–5 years. Leveraging long-term partnerships with equipment OEMs, research institutes, and calibration labs, TESTRO acquires traceable, well-maintained decommissioned or replacement units. Every instrument undergoes a five-step technical check and third-party calibration before entering stock, ensuring reliable performance data.

Core Services & Delivery Process