The Fluke 9640A RF Reference Source is a high-performance calibrator that delivers accurate and stable RF signals. With a frequency range from 10 Hz to 4 GHz, it is suitable for a wide range of RF calibration applications. This reference source offers excellent signal purity and amplitude accuracy, making it an essential tool for calibration laboratories and RF test facilities. Its robust design and comprehensive functionality ensure reliable performance and ease of use, providing traceable and consistent results for RF equipment calibration.

Fluke 9640A – 10 Hz – 4 GHz RF Reference Source, Calibrator
The Fluke 9640A RF Reference Source is a precision calibration instrument designed for calibrating RF and microwave test equipment. Covering a frequency range of 10 Hz to 4 GHz, it provides stable and accurate signals for calibrating spectrum analyzers, signal generators, and other RF devices. It ensures traceability and confidence in RF measurements, enhancing the accuracy and reliability of RF test setups.
Product Condition & Availability
Fluke 9640A – 10 Hz – 4 GHz RF Reference Source, Calibrator 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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