The Anritsu S331A Site Master is a portable cable and antenna analyzer designed for evaluating the performance of coaxial cable and antenna systems. Key features include frequency coverage, allowing comprehensive testing of various wireless communication bands. It offers one-port measurements, including return loss, VSWR, cable loss, and distance-to-fault (DTF). The S331A is rugged and battery-powered, making it suitable for field use. Its ease of use and accurate measurement capabilities make it an essential tool for maintaining and optimizing wireless infrastructure.

Anritsu S331A
The Anritsu S331A is a Site Master cable and antenna analyzer. It is used to test and maintain wireless communication systems. This handheld instrument is designed for field technicians and engineers involved in the installation, maintenance, and troubleshooting of antenna systems and cables. It provides accurate measurements of return loss, VSWR, cable loss, and distance-to-fault, ensuring optimal performance of wireless networks.
Product Condition & Availability
Anritsu S331A is in excellent working condition and has been thoroughly tested for performance and reliability. We offer both new and professionally refurbished options, depending on availability and customer preference.
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Integrated Solutions & Deployment Support
Beyond individual products, Aumictech provides end-to-end solutions for manufacturing line deployment and test station setup. Our team can assist with system integration, configuration, and equipment selection tailored to your production requirements.
Trusted Industry Experience
With over a decade of experience, Aumictech is a recognized leader in RF and optical test equipment sales and services. All units are supported by our in-house calibration and repair facility based in Downingtown, PA, ensuring technical reliability and long-term value.
Customer Commitment
We’re committed to exceptional customer service, offering a 15-day return or replacement (ROR) policy for peace of mind. Our team is always available to assist with pre- and post-sale support.
Fast Shipping & Flexible Payments
We offer rapid global shipping through FedEx, UPS, and DHL, with most orders dispatched within 1–3 business days. Multiple secure payment options are available, including PayPal, ACH, wire transfers, and major credit cards.
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