Siglent SHA851A, Handheld Spectrum Cable and Antenna Analyzer, 9 kHz–3.6 GHz

The Siglent SHA851A is a rugged, portable RF analyzer combining spectrum analysis, cable and antenna testing, and optional vector network analysis. It features a wide frequency range from 9 kHz to 3.6 GHz, fast scanning speed, and high sensitivity with a preamplifier. Its 8.4″ touchscreen and full keypad enable efficient field operation, supported by internal battery power for up to four hours. Designed for telecom, broadcast, and field RF applications, it includes features like TDR, VSWR, loss measurements, and GPS logging to support on-site diagnostics and installation.

Key Features

• 9 kHz – 3.6 GHz spectrum analysis and 100 kHz – 3.6 GHz cable/antenna testing
• High sensitivity: –165 dBm/Hz displayed average noise level; –104 dBc/Hz phase noise at 1 GHz, 10 kHz offset
• Integrated preamplifier for boosting weak signals
• Optional VNA capability for S11/S21 measurements with 114 dB dynamic range
• Built-in TDR, VSWR, distance‑to‑fault, insertion‑loss, and Smith‑chart support
• 8.4″ multi‑touch screen, intuitive UI plus hardware keypad