This video demonstrates how to use an old-school frequency meter, also known as a wavemeter, using the HP X532A as an example. The featured wavemeter, now often available at low cost, are microwave-frequency absorption meters designed for the IEEE X-Band. The device operates in the 8.2 to 12.4 GHz range and uses WR90 waveguide connectors.
A Gunnplexer is used to generate a signal at approximately 10 GHz, and its exact frequency is measured using a series of waveguide transitions, the microwave frequency meter, and a basic power detector.
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