The pre-owned R&S FSL3 delivers lab-grade spectrum analysis from 9 kHz to 3 GHz in a sub-8 kg chassis, ideal for production lines, service labs and field troubleshooting. A 28 MHz demodulation path captures today’s wide-channel WLAN, Bluetooth and IoT signals, while phase noise around –103 dBc/Hz and a pre-amp-enabled noise floor near –158 dBm expose low-level spurs and EMI emissions with confidence.

Optional GPIB, LAN/IF and internal pre-amplifier upgrades safeguard remote automation and sensitivity growth, and each used unit ships freshly calibrated and firmware-current—offering immediate availability and significant capital savings without sacrificing measurement accuracy or Rohde & Schwarz reliability

Contact Us for a Fast Quote

Interested in an Used Rohde & Schwarz FSL3 — 3 GHz Lightweight Spectrum Analyzer or a similar model?

• Drop your WhatsApp number or e-mail on our website and we will:

  
  

  • Send a tailored quotation and any current promotions.

  • Provide extra photos, test data, and full configuration details.

  • Discuss shipping, duties, warranty, and any other specifics you need.

  
  

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, swipe a major card, or settle in USDC and other stablecoins—whatever keeps your transaction smooth.

6. Open-Door Assurance

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